Page 44 - Revised Maths Wisdom Class - 3

42 MATHS

Exercise 3F

1 Estimate the sum by rounding off the numbers to the nearest tens. Also, fi nd the
actual sum.

(a) 65 + 24 (b) 46 + 33 (c) 55 + 31 (d) 73 + 18

2 Estimate the sum by rounding off the numbers to the nearest hundreds. Also, fi nd
the actual sum.

(a) 143 + 265 (b) 267 + 324 (c) 343 + 575 (d) 525 + 268

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Competency based Questions

I. MULTIPLE CHOICE QUESTIONS (Tick () the Correct Option)

1 14 + 16 + 12 + 18 = ?

(a) 40 (b) 50 (c) 60 (d) 70

2 25 + 35 + 45 + 55 = ?

(a) 130 (b) 140 (c) 150 (d) 160

3 The ones digit in the sum of 3656 and 1948 is:
(a) 4 (b) 6 (c) 7 (d) 8

4 If we add 9 tens, 5 hundreds and 3 ones, then the result is:

(a) 17 (b) 395 (c) 593 (d) 953

5 A school library had 2698 books. The school bought 578 more books. How many
books does the library have now?

(a) 3196 (b) 3256 (c) 3266 (d) 3276

6 Renu sold 27 chocolates and 47 pastries. Dhruv sold 35 chocolates and 39 pastries.
How many pastries were sold in all?

(a) 62 (b) 66 (c) 82 (d) 86

7 There are three primary schools in a city. The total strength of these schools is 1200,
1300 and 1500 respectively. How many pupils are there in all in the three schools?

(a) 3000 (b) 3500 (c) 3800 (d) 4000