Page 17 - Maths Class 05
P. 17
Practice - 1.3
Practice - 1.3
Practice - 1.3
Practice - 1.3
1. Put the symbols or in the circles to make the statements correct.> <
a. 8576281 244805 b. 70582914 49882287
c. 441830495 398529384 d. 859729924 859719925
e. 560046257 560146257 f. 489520109 474645258
2. Write the successor and the predecessor of the following numerals.
a. 4475309 b. 45681217 c. 282431207
d. 500000000 e. 2900359 f. 448156000
3. Fill in the blanks.
a. _______________ is the smallest whole number.
b. Predecessor of ten lakhs is _______________ .
c. One crore has _______________ thousands.
d. Nineteen crore nine lakh is the predecessor of _______________ .
e. The successor of a number is _______________ more than the number.
4. Write the smallest and the largest numerals using each of the following digits only once.
a. 2,7,6,8,5,9 b. 3,1,0,2,8,7,4 c. 5,8,3,2,6,1,0
d. 8,7,6,4,3,2,5,0 e. 2,3,9,6,7,4,5,8 f. 8,1,7,9,3,6,4,5
5. Using 1,0,3, write the smallest and the largest numerals of 7 digits (repetition of digits is
allowed).
6. Write any numeral of 8 different digits. Write another numeral by reversing the digits.
Find which of the two numerals is greater.
Rounding off Numbers
We have learnt rounding off numbers to the nearest 10, nearest 100 and nearest 1000
in earlier classes. We apply the same rules when we want to round off a given number
to the nearest 10000, 100000, 1000000, etc.
« When we round off a number to the nearest 10, we find the nearest multiple of 10.
« When we round off a number to the nearest 100, we find the nearest multiple of 100.
« When we round off a number to the nearest 1000, we find the nearest multiple of 1000.
« Similarly, when we round off a number to the nearest 10000, we find the nearest
multiple of 10000.
Look at the examples carefully.
a. 2830 is rounded off to 3000 up to the nearest thousand.
Mathematics-5 17
