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.
Fill in the blank:
The smallest four digit number with four different digits is _______.
Answer
The smallest four digit number with four different digits is 1023. Solution:
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.
Fill in the blank:
The total number of 5 digit numbers = _____.
Answer
The total number of 5 digit numbers = 90000. Solution:
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 × 10 × 10 × 10 × 10 = 90000
The total number of 5 digit numbers = 90000
Mark the correct alternative in the following:
The difference between the place value and face value of 8 in 658742 is:
0
42
735
693
Answer
The options given are incorrect.
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
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.
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.
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.
Mark the correct alternative in the following:
The difference between the place values of 6 and 3 in 256839 is:
3
9
6800
5930
Answer
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
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.
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 4th last digit and the last three digits will become zero.
After rounding to nearest thousand we will get 54000.
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.