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SAI International School

Sub – Mathematics

Class - IV

Topic – Operations

Sub-topic: Estimating Operations

 Practice Time:
 Subjective Questions
1. Estimate the sum 7897 and 6432 by rounding off them to the nearest 1000.
2. Find out the actual difference between 1679 and 8703 and then estimate the
difference by rounding off them to the nearest 100.
3. Estimate the total number of chocolates, if Hari has 3456 chocolates and Shyam
has 9812 chocolates by rounding them off to the nearest 100.
4. If Amit has 6785 packets of sweets. He gave 1256 to his friends. Estimate the
packets of sweets left with Amit by rounding off to the nearest 10.
5. Estimate the product of 7654 and 45.
6. Find the actual quotient of 12985 and 23 and then estimate the quotient.
7. A book of 1456 pages has 99594 words in it. How many words are there in each
page? *Hint – round off the numbers to the nearest 1000.
8. Find the estimated product of the following:
a. 628 X 537 X 96
b. 2356 X 126 X 103

Objective Questions
1. Estimate the product of 32 and 68
a. 30 X 60

b. 30 X 70
c. 40 X 80
d. 20 X 70

2. Aditya purchased a bag for rupees 378 and a shirt for rupees 636.
Estimate the total money spent by him on both the items.
a. 300 + 600

b. 400 + 600
c. 300 + 700
d. 400 + 700