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DEMO TEACHING ELEM.pptx
- 3. Solve the following problems mentally.
1) 5 + 5 =
2) 2 x 20 =
3) 5 x 5 =
4) 10 + 18 =
5) 15 x 2 =
6) 12 + 12 =
10
40
25
28
30
24
- 15. P = L+L+W+W or P = 2L + 2W
15 + 15 + 5 + 5 2(15) + 2(5)
30 +10 = 40cm. 30 + 10 = 40cm.