Page 59 - Mathematics Pre Primer

Subtrac on

(by Finger Coun ng)

Example : 5 – 2 = ?

Solu on : First, open 5 fingers on one hand.

Now, which number is smaller? Here, It’s 2.

Now, close 2 fingers.

Then count the remaining fingers as 1, 2 and 3.

Thus, 5 – 2 = 3

Always take the bigger number on your fingers first.

Subtract by using fingers :

7 6 4 8 7 3

– 2 – 2 – 2 – 3 – 5 – 2

4 7 9 8 7 4

– 3 – 1 – 5 – 7 – 3 – 1

9 7 6 8 8 2

– 7 – 4 – 4 – 1 – 5 – 1

59 Maths Pre-Primer