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198 questions · 2 auto-graded MCQ + 196 self-marked written.

Question 21 Mark
Write the number names of the following in international system of numeration: $25,201,905$
Answer
Twenty-five million, two hundred one thousand, nine hundred and five.
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Question 31 Mark
Write the following in numerical form: Six hundred seven million twelve thousand eighty four.
Answer
$607,012,084$
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Question 41 Mark
Write the corresponding numeral for the following:
$7 \times 10000 + 2 \times 1000 + 5 \times 100 + 9 \times 10 + 6 \times 1$
Answer
$70000 + 2000 + 500 + 90 + 6 = 72,596$
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Question 71 Mark
How many milligrams make one kilogram?
Answer
Ten lakh or one million $(10,00,000)$ milligrams make one kilogram.
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Question 91 Mark
Write the following numbers in digits by using international place value chart. Also, write them in expanded form. Seven million three hundred three thousand two hundred six.
Answer
$7,303,206$ Expanded form $= 7 \times 1000000 + 3 \times 100000 + 0 \times 10000 + 3 \times 1000 + 2 \times 100 + 0 \times 10 + 6 \times 1$
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Question 161 Mark
In two-digit numbers, how many times does the digit 5 occur in: The unit's place?
Answer
In units place, i.e., $15, 25, 35, 45, 55, 65, 75, 85, 95 5$ occur $9$ times
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Question 171 Mark
Arrange the following numbers in descending order: $5,69,43,300, 5,69,43,201, 56,95,440, 5,69,44,000, 56,94,437$
Answer
$5,69,44,000, 5,69,43,300, 5,69,43,201, 56,95,440, 56,94,437$
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Question 221 Mark
Write the following numbers in words in the Indian system of numeration: $42,007$
Answer
Forty two thousand seven.
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Question 231 Mark
Write the following numbers in the international system of numeration: Six crore thirty four lakh four thousand forty four.
Answer
$63,404,044$ or Sixty three million four hundred four thousand forty four.
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Question 261 Mark
Write the following numbers in the Indian system of numeration:
Seventy six million eighty five thousand nine hundred eighty seven.
Answer
$7,60,85,987$ or Seven crore sixty lakh eighty five thousand nine hundred eighty seven.
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Question 271 Mark
Write the corresponding numeral for the following: 4$ \times 100000 + 5 \times 1000 + 1 \times 100 + 7 \times 1$
Answer
$400000 + 5000 + 100 + 7 = 4,05,107$
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Question 281 Mark
What is the largest 5-digits number with unique digits?
Answer
The largest five-digit number with unique digits $98,765.$
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Question 301 Mark
Find the estimated quotient for the following by rounding off number to its greatest place: $4489 ÷ 394$
Answer
$4000 ÷ 400 = 10$
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Question 311 Mark
Write the expression for the following statement using brackets: Divide the difference of twenty eight and seven by $3.$
Answer
$28 - 73$
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Question 321 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words:
$10000007$
Answer
$1,00,00,007$
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Question 341 Mark
Rewrite the following numerals with proper commas in the international system of numeration. $513625$
Answer
$513,625$ or Five hundred thirteen thousand six hundred twenty five.
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Question 351 Mark
Estimate the following by rounding off factor to nearest thousands: $28,292 - 21,496$
Answer
$28,000 - 21,000 = 7,000$
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Question 361 Mark
Write the following numbers in the Indian system of numeration:
Six million five hundred forty three thousand two hundred ten.
Answer
$65,43,210$ or Sixty five lakh forty three thousand two hundred ten.
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Question 371 Mark
Find the estimated quotient for the following by rounding off number to its greatest place: $878 ÷ 28$
Answer
$900 ÷ 30 = 30$
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Question 431 Mark
Write the corresponding numeral for the following: $8 \times 1000000 + 3 \times 1000 + 6 \times 1$
Answer
$8000000 + 3000 + 6 = 80,03,006$
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Question 481 Mark
Write the following in numeral form: Seventeen crore sixty lakh thirty thousand fifty seven.
Answer
$17,60,30,057$
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Question 491 Mark
Write the following in numerical form:
Four billion twenty five million forty five thousand.
Answer
$4,025,045,000$
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Question 501 Mark
Write the following numerals in International system of numeration: $457923$
Answer
Four hundred fifty seven thousand nine hundred twenty three.
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Question 531 Mark
Put the appropriate symbol $(<, >)$ of the following boxe: $47983505$ ______ $47894012$
Answer
$47983505 > 47894012$
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Question 541 Mark
Find the smallest and the greatest numbers which are rounded off to the nearest thousands as $9000.$
Answer
Smallest number: $8,500$
Greatest number: $9,499$
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Question 551 Mark
Fill in the blank: The smallest four digit number with four different digits is _______.
Answer
 Four smallest digits are $0, 1,2$ and $3$. In order to write the smalest $4-$digit number using digits $0, 1, 2$ and $3,$
we put the smallest digit $1$ (Except $0)$ at the place having the highest place value.
The largest digit $3$ is put at the right most place
i.e. at unit's place, the digit $2$ is put at the ten's place and the digit $0$ is put at the hundred's place.
Hence, the required largest number is $1023.$
The smallest four digit number with four different digits is $1023.$
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Question 561 Mark
Write the following numbers in words in the Indian system of numeration: $35,42,012$
Answer
Thirty five lakh forty two thousand twelve.
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Question 571 Mark
Estimate the following by rounding off number to its greatest place:
$439 + 334 + 4,317$
Answer
$400 + 300 + 4000 = 4700$
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Question 601 Mark
Write the following numerals in Indian system of numeration: $53428769$
Answer
$5,34,28,769$ or Five crore thirty four lakh twenty eight thousand seven hunderd sixty nine.
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Question 611 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words: $24798$
Answer
$24,798$
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Question 631 Mark
Fill in the blank: The total number of $5$ digit numbers = _____.
Answer
There are $10$ digits
i.e., $0, 1, 2, 3, 4, 5, 6 ,7, 8, 9.$
We can not use $'0'$ at the place having the highest place value.
So, we can use only $9$ digits at the place having the highest place value.
Also, we can use $10$ digits at the remaining places.
So, total numbers of four-digit numbers $= 9 \times 10 \times 10 \times 10 \times 10 = 90000$
The total number of $5$ digit numbers $= 90000$
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Question 651 Mark
Fill in the blank: $1$ billion = _____ million.
Answer
$1$ billion $= 1000000000= 1000 \times 1000000 = 1000$ millions [$\because 1$ million $= 1000000]$
$\therefore 1$ billion $= 1000$ millions.
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Question 671 Mark
Write the following in numeral form: Three crore three lakh three thousand three hundred three.
Answer
$3,03,03,303$
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MCQ 691 Mark
Mark the correct alternative in the following: The difference between the place value and face value of $8$ in $658742$ is:
  • A
    $0$
  • $7992$
  • C
    $735$
  • D
    $6932$
Answer
Correct option: B.
$7992$
The place value of $8$ in $6,58,742 = 8$
thousands $= 8,000$
The face value of $8 = 8$
$\therefore$ Difference $= 8,000 - 8 = 7,992$
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Question 701 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words:$ 857367$
Answer
$8,57,367$
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Question 741 Mark
A certain nine digit number has only ones in ones period, only twos in the thousands period and only threes in millions period. Write this number in words in the Indian system.
Answer
The number is $333,222,111$ In Indian system, the number is written as $33,32,22,111$ thirty - three crore thirty - two lakh twenty thousand one hundred and eleven.
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Question 751 Mark
Form the largest and smallest $4-$digit numbers using each of digits $7, 1, 0, 5$ only once.
Answer
The largest and smallest four-digit numbers formed using $7, 1, 0$ and and $5$are $7, 510$ and $1, 057.$
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Question 771 Mark
Write the following numbers in digits by using international place value chart. Also, write them in expanded form. Fifty five million twenty nine thousand seven.
Answer
$55,029,007$ Expanded form $= 5 \times 10000000 + 5 \times 1000000 + 0 \times 100000 + 2 \times 10000 + 9 \times 1000 + 0 \times 100 + 0 \times 10 + 7 \times 1$
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Question 781 Mark
Rewrite the following numerals with proper commas in the international system of numeration.
$65954923$
Answer
$65,954,923$ or Sixty five million nine hundred fifty four thousand nine hundred twenty three.
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Question 801 Mark
Write the expression for the following statement using brackets: Four multiplied by the sum of $13$ and $7$
Answer
$4 \times (13 + 7)$
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Question 821 Mark
Put the appropriate symbol $(<, >)$ of the following boxe: $2507324$ _____ $2517324$
Answer
$2507324 < 2517324$
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Question 841 Mark
Write the following numerals in Indian system of numeration: $27943$
Answer
$27,943$ or Twenty seven thousand nine hundred forty three.
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Question 861 Mark
Write the following numerals in Indian system of numeration:
$7421932$
Answer
$74,21,932$ or Seventy four lakh twenty one thousand nine hundred thirty two.
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Question 871 Mark
List all numbers which are rounded off to the nearest ten as $370.$
Answer
$365, 366, 367, 368, 369, 370, 371, 372, 373, 374$
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Question 881 Mark
Write the following numerals in International system of numeration: $83254$
Answer
Eighty three thousand two hundred fifty four.
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Question 891 Mark
Put the appropriate symbol $(<, >)$ of the following boxe:
$3572014$ ______ $10253104$
Answer
$3572014 < 10253104$
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Question 911 Mark
Write the expression for the following statement using brackets: The sum of $3$ and $7$ in multiplied by the difference of twelve and eight.
Answer
$(3 + 7) \times (12 - 8)$
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Question 961 Mark
Find the place value of the digit $4$ in the following:
$74983160$
Answer
Place value of,
$4 = 4 \times 10,00,00 = 40,00,00$
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Question 971 Mark
Write the number names of the following in international system of numeration: $59,064,523$
Answer
Fifty-nine million, sixty-four thousand, five hundred and twenty-three
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Question 1011 Mark
In two-digit numbers, how many times does the digit $5$ occur in: The ten's place.
Answer
In ten's place i.e., starting from $50$ to $59, 5$ occur $10$ times
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Question 1021 Mark
Estimate the following by rounding off factor to nearest thousands: $12,904 + 2,888$
Answer
$13,000 + 3,000 = 16,000$
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Question 1061 Mark
Estimate the following by rounding off number to its greatest place: $87 \times 317$
Answer
$90 \times 300 = 27000$
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Question 1071 Mark
Write is smallest $3-$digit number which does not change if the digits are written in reverse order.
Answer
The smallest three-digit number that does not change if the digits are written in reverse order is $101.$
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Question 1091 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words: $9050784$
Answer
$90,50,784$
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Question 1101 Mark
Fill in the blank:
$1$ billion = _____ crore.
Answer
$1$ billion $= 1000000000$
$= 100 \times 10000000$
$= 100$ crores [$\because 1$ crore $= 10000000]$
$\therefore 1$ billion $= 100$ crores.
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Question 1111 Mark
Estimate the following by rounding off number to its greatest place: $9 \times 795$
Answer
$10 \times 800 = 8000$
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Question 1151 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words: $10105607$
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Question 1161 Mark
Write the following numbers in words in the Indian system of numeration:
$7,06,04,014$
Answer
Seven crore six lakh four thousand fourteen.
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Question 1181 Mark
Write the following numbers in digits by using international place value chart. Also, write them in expanded form. Six billion one hundred ten million three thousand seven.
Answer
$6,110,003,007$ Expanded form $= 6 \times 1000000000 + 1 \times 100000000 + 1 \times 10000000 + 0 \times 1000000 + 0 \times 100000 + 0 \times 10000 + 3 \times 1000 + 0 \times 100 + 0 \times 10 + 7 \times 1$
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Question 1191 Mark
Write all possible $3-$digit numbers using the digits $6, 0, 4$ when. Repetition of digits is not allowed.
Answer
$604, 640, 460, 406$
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Question 1201 Mark
Estimate the following by rounding off factor to nearest hundreds: $730 + 998$
Answer
$700 + 1000 = 1700$
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Question 1211 Mark
Rewrite the following numerals with proper commas in the international system of numeration. $70902005$
Answer
$70,902,005$ or Seventy million nine hundred two thousand five.
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Question 1241 Mark
Arrange the following numbers in descending order: $10,20,216, 10,20,308, 10,21,430, 8,93,425, 8,93,245$
Answer
$10,21,430, 10,20,308, 10,20,216, 8,93,425, 8,93,245$
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Question 1251 Mark
Arrange the following numbers in ascending order:$ 102345694, 8354208, 6539542, 63547201, 12345678$
Answer
$65,39,542, 83,54,208, 1,23,45,678, 6,35,47,201, 10,23,45,694$
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Question 1281 Mark
Write the following numbers in words in the Indian system of numeration: $5,03,04,012$
Answer
Five crore three lakh four thousand twelve.
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Question 1311 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words: $910107104$
Answer
$91,01,07,104$
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MCQ 1331 Mark
Mark the correct alternative in the following:
The difference between the place values of $6$ and $3$ in $256839$ is:
  • A
    $3$
  • B
    $5930$
  • C
    $6800$
  • None of these
Answer
Correct option: D.
None of these
The options given are incorrect.
The place value of $6$ in $2,56,839 = 6$ thousands $= 6,000$
he place value of $3$ in $2,56,839 = 3$ tens $= 30$
$\therefore$ Difference $= 6,000 - 30 = 5,970$
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Question 1361 Mark
Find the smallest and the greatest numbers which are rounded off to the nearest hundreds as $900.$
Answer
Smallest number: $850$
Greatest number: $949$
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Question 1381 Mark
Simplify each of the following: $7 \times 109$
Answer
$7 \times 109 = 7 \times (100 + 9) = 7 \times 100 + 7 \times 9 = 700 + 63 = 763$
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Question 1391 Mark
Which of the following is meaningless?
$i.\ III¯CC < $
$ii.\ KKKCCXI$
$iii.\ XD$
$iv.\ VC$
Answer
The following numbers are meaningless:
$i.\ $Since bar is not placed above any symbol
$ii.\ $Since $X$ can't be subtracted from $D$
$iii.\ $Since $V$ is never written to the left of a symbol of greater value
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Question 1471 Mark
Write the following numbers in the Indian system of numeration: Three hundred twenty five million four hundred seventy nine thousand eight hundred thirty eight.
Answer
$32,54,79,838$ or Thirty two crore fifty four lakh seventy nine thousand eight hundred thirty eight.
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Question 1481 Mark
Write all possible $3-$digit numbers using the digits $6,0,4$ when. Repetition of digits is allowed
Answer
$666, 664, 646, 660, 606, 600, 644, 640, 604, 444, 466, 440, 446, 464, 400, 404, 406, 460$
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Question 1491 Mark
Write the number names of the following in international system of numeration:
$435,002$
Answer
Four hundred thirty-five thousand and two
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Question 1511 Mark
Insert commas in the correct positions to separate periods and write the following numvers in words: $4375$
Answer
$4,375$
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Question 1521 Mark
Estimate the following by rounding off number to its greatest place: $108734 - 47599$
Answer
$100000 - 500000 = 50000$
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Question 1551 Mark
Estimate the sum $(4505 + 27807 + 21397)$ to the nearest thousand.
Answer
$4505 + 27807 + 21397 = 53709$
In $53709$ the last three digits i.e., $709$ is greater than $500.$
Hence, $1$ will be added to the $4$th last digit and the last three digits will become zero.
After rounding to nearest thousand we will get $54000.$
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Question 1591 Mark
Estimate the following by rounding off number to its greatest place: $8,325 - 491$
Answer
$8000 - 500 = 7500$
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Question 1611 Mark
Write the expression for the following statement using brackets: Eight multiplied by the difference of four from nine.
Answer
$8 \times (9 - 4)$
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Question 1621 Mark
Find the difference between the number $279$ and that obtained on reversing its digits.
Answer
The number obtained on reversing $279 = 972$
Difference $= 972 - 279 = 693$
Thus, the difference between $279$ and that obtained on reversing its digits is $693.$
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Question 1631 Mark
Write the number names of the following in international system of numeration: $1,047,509$
Answer
One million, forty-seven thousand, five hundred and nine
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Question 1641 Mark
Write the following numerals in International system of numeration:
$2543876$
Answer
Two million five hundred forty three thousand eight hundred seventy six.
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Question 1671 Mark
Fill in the blank:
crore = millions.
Answer
$1$ crore $= 10000000$
$= 10 × 1000000$
$= 10$ millions [$\because 1$ millions $= 1000000]$
$\therefore$ $1$ crore $= 10$ millions.
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Question 1681 Mark
Find the estimated quotient for the following by rounding off number to its greatest place:
$745 ÷ 24$
Answer
$700 ÷ 20 = 35$
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Question 1701 Mark
Write the following numerals in International system of numeration:
$700430084$
Answer
Seven hundred million four hundred thirty thousand eighty four.
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Question 1711 Mark
Write the following in numerical form: Nighty-Eight million seven hundred eight thousand four.
Answer
$98,708,004$
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Question 1721 Mark
Write the following numbers in the international system of numeration: Seven lakh thirty five thousand eight hundred ninety nine only.
Answer
$735,899$ or Seven hundred thirty five thousand eight hundred ninety nine.
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Question 1741 Mark
What is smallest $3-$digit number with unique digits?
Answer
The smallest three-digit number with unique digits is $102.$
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Question 1761 Mark
Rewrite the following numerals with proper commas in the international system of numeration. $4035672$
Answer
$4,035,672$ or Four million thirty five thousand six hundred seventy two.
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Question 1811 Mark
Write the following numbers in words in the Indian system of numeration: $5,50,50,050$
Answer
Five crore fifty lakh fifty thousand fifty.
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Question 1821 Mark
Write the following numbers in the international system of numeration: Forty three lakh four thousand eighty four.
Answer
$4,304,084$ or Four million three hundred four thousand eighty four.
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Question 1841 Mark
Write the corresponding numeral for the following: $5 \times 10000000 + 7 \times 1000000 + 8 \times 1000 + 9 \times 10 + 4$
Answer
$50000000 + 7000000 + 8000 + 90 + 4 = 5,70,08,094$
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Question 1851 Mark
Put the appropriate symbol $(<, >)$ of the following boxe:
$102394$ _____ $99887$
Answer
$102394 > 99887$
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Question 1861 Mark
Write the following numbers in words in the Indian system of numeration: $4,05,045$
Answer
Four lakh five thousand forty five.
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Question 1891 Mark
Write the following numbers in words in the Indian system of numeration: $25,05,05,500$
Answer
Twenty five crore five lakh five thousand five hundred.
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Question 1901 Mark
Find the place value of the digit $4$ in the following:
$8745836$
Answer
Place value of $4 = 4 \times 10,000 = 40,000$
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Question 1921 Mark
Write the following numerals in Indian system of numeration: $823514$
Answer
$8,23,514$ or Eight lakh twenty three thousand five hunderd fourteen.
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Question 1961 Mark
Arrange the following numbers in ascending order: $1808090, 1808088, 181888, 190909, 16060666$
Answer
$1,81,888, 1,90,909, 18,08,088, 18,08,090, 1,60,60,666$
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Question 1981 Mark
Estimate the following by rounding off number to its greatest place: $898 \times 785$
Answer
$900 \times 800 = 720000$
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