Page 131 - New Medley 1 Semester 1
P. 131
Addition by Forward Counting
Suppose we have to add 5 and 7: 5 + 7
We can add by starting from 5 and counting 7 steps forwards.
1 2 3 4 5 6 7
We reach 12.
So 5 + 7 = 12
A. Add the following by counting forwards.
1. 3 + 6 =
2. 4 + 7 =
3. 7 + 4 =
4. 8 + 5 =
B. Now do it mentally.
5. 8 + 7 =
6. 8 + 8 =
7. 4 + 6 =
8. 7 + 8 =
9. 9 + 5 =
10. 9 + 9 =
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