Page 2 - Whole Numbers (Addition and Subtraction)

Whole nUmbers:

Addition And sUbtrAction

3.1 Adding on

1. How much is each of the following?
(a) 35 + 1 (b) 35 + 2 (c) 35 + 3
(d) 35 + 4 (e) 35 + 5 (f) 35 + 6

2. How much is each of the following?
(a) 70 + 10 (b) 70 + 20 (c) 70 + 30
(d) 70 + 40 (e) 70 + 50 (f) 70 + 60
3. (a) What number is seven more than 56?

(b) What number is three more than 56?

(c) What number is seven less than 63?
(d) What number is five less than 63?

(e) What is the difference between 56 and 58?

You can use one addition fact to find another addition fact.
You know that 11 is 1 more than 10.
So if you know that 5 + 5 = 10, you know that 5 + 6 = 11.
You know that 3 + 3 = 6.
Two more than 6 is 8, so 3 + 5 = 8.

If you always have to count, you will work so slowly that you
will never perform well in Mathematics!

Do the questions below without counting on your fingers or
other objects.
4. How much is each of the following?

(a) 48 + 1 (b) 48 + 2 (c) 49 + 1 (d) 48 + 3
(e) 10 + 10 (f) 10 + 11 (g) 10 + 12 (h) 10 + 13
(i) 11 + 14 (j) 12 + 14 (k) 13 + 14 (l) 14 + 14

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