Page 30 - Viva

• If 0 is added to a number, the sum will be the Mental Maths
same number itself.
Fill in the blanks
For example, 356 + 0 = 356 and 0 + 229 = 229 (a) 201 + ____ = 102 + ____
• If 1 is added to a number, the sum will be the (b) 356 + 0 = ____

next number (successor). (c) 299 + ____ = 300

For example, 458 + 1 = 459 and 1 + 715 = 716

Exercise 2.2

1. Add the given numbers.

(a) H T O (b) H T O (c) H T O
1 5 9 2 8 5 5 8 5

+ 4 6 + 4 1 9 + 2 0 9

(d) H T O (e) H T O (f) H T O

2 7 6 2 1 5 6 2 3
5 2 3 3 8 7 1 4 5

+ 1 0 9 + 1 5 1 + 2 7

2. Find the sum.

(a) 713 + 190 (b) 85 + 209

(c) 39 + 556 (d) 325 + 122 + 438

(e) 579 + 196 (f) 647 + 289

Addition Using Expanded Form

To add the given numbers using the expanded form, we follow the given steps.

• Write each number in the expanded form.

• Add the values at each place.

• Find the sum of the added values.

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