Questions · Page 3 of 4

1 Marks Question

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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1 Marks Question - Page 3 - MATHS STD 6 Questions - Vidyadip