Page 36 - Viva

2. Find the sum.

(a) 436 + 267 (b) 512 + 0 (c) 601 + 100

(d) 312 + 196 + 204 (e) 417 + 213 + 116 (f) 105 + 200 + 108

3. Tick (ü) the correct option.

(a) The sum of 9 hundreds 9 tens and 9 ones is ________.

(i) 999 (ii) 990 (iii) 909 (iv) 900
(b) The sum of the smallest 3-digit number and the largest 2-digit number is

________.
(i) 199 (ii) 919 (iii) 191 (iv) 991

(c) Adding ________ to a number gives the same number.
(i) 1 (ii) 0 (iii) 10 (iv) 100

(d) The sum of 325 and ________ is the successor of 325.

(i) 0 (ii) 4 (iii) 10 (iv) 1
4. Add the following numbers using the expanded form.

(a) 462 + 215 (b) 349 + 550 (c) 73 + 625

5. Solve the following word problems.

(a) Raman has three story books containing 223, 67 and 385 pages respectively.
How many total number of pages do these story books have?

(b) A cinema hall sold 463 tickets on the first day and 398 tickets on the second
day. How many tickets did it sell in all?
(c) Ananya has 503 pearls. Her friend gives her 75 more pearls. How many pearls
does Ananya have in all?

(d) There are 462 boys and 407 girls in a school. How many children are there in all?

6. Estimate the following sums by rounding off the addends as mentioned.

(a) 342 + 286 + 170 (to the nearest 10)
(b) 258 + 172 + 362 (to the nearest 100)

(c) 278 + 400 + 106 (to the nearest 100)

7. Among all the participants in a competition, 156 are boys and 192 are girls.
Estimate the total number of participants in the competition by rounding off each
number to the nearest 100.

8. Add the following numbers mentally and write the sum in the box.

(a) 85 + 70 = (b) 38 + 42 = (c) 94 + 19 =

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