Page 132 - New Medley 1 Semester 1

Subtract by Drawing lines and Crossing them

Suppose we have to subtract 4 from 11.

This can be done by drawing 11 lines and crossing out 4 of them.

1 1
1 2 3 4 5 6 7
– 4

7 (We count left over lines. There are 7 lines left.)

So 11 – 4 = 7

A. Draw lines and subtract the following.

1. 2. 3.
1 1 1 5 1 6

– 8 – 6 – 5

4. 5. 6.
1 7 1 2 1 3

– 9 – 7 – 6

7. 8. 9.
1 4 1 7 1 5

– 5 – 8 – 9

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