Page 38 - Viva

Progress Worksheet

Mental Maths
1. Fill in the blanks.

(a) 256 + _____ = 256 (b) _____ + 1 = 238

(c) 120 + 335 = 335 + _____ (d) 0 + 950 = _____

2. Add the numbers mentally by breaking them into tens and ones.

(a) 84 + 43 = ____ (b) 68 + 33 = ____ (c) 34 + 45 = ____ (d) 54 + 63 = ____

Solve and Answer

3. Add the following numbers.
(a) H T O (b) H T O (c) H T O

6 4 1 7 2 3 5 7 5

2 3 5 + 2 4 5 + 4 7
+ 5 5

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

(a) 356 + 431 + 50 (to the nearest ten)
(b) 186 + 458 + 340 (to the nearest hundred)

5. Rano has 132 coins, Ria has 270 coins and Ridhi has 251 coins. Estimate the total
number of coins they have if they round off all the numbers to the nearest 100.

6. In a book fair, there are 123 stalls of children’s books, 43 stalls H T O
of foreign books and 52 stalls of spiritual books. Find the total
number of book stalls.

There are ______ book stalls in all. +

7. Add the following numbers using the expanded form.
(a) 53 + 525 (b) 264 + 325 (c) 247 + 350 (d) 64 + 222

8. For a cricket tournament, 460 tickets of the East End pavilion, H T O
429 tickets of the West End pavilion and 439 tickets of the South
End pavilion were sold. How many tickets were sold in all?
+

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