A. 3 , 6 , 9 , 12 , 15 , 18
B. 4 , 8 , 12 , 16 , 20 , 24
1) 2 + 5 = 5 + 2
2) 7 × 6 = 6 × 7
3) 5 + 0 = 5
4) 5 × 1 = 5
5) (3 + 2)+(5 + 4) = (5 + 4)+(3 + 2)
6) (16 × 5) × 4 = 16 × (5 × 4)
7) 3×(15 + 20) = (15 × 3)+(3 × 20)
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Answers & Comments
Activity 1.
A. 3 , 6 , 9 , 12 , 15 , 18
B. 4 , 8 , 12 , 16 , 20 , 24
Activity 2.
1) 2 + 5 = 5 + 2
2) 7 × 6 = 6 × 7
3) 5 + 0 = 5
4) 5 × 1 = 5
5) (3 + 2)+(5 + 4) = (5 + 4)+(3 + 2)
6) (16 × 5) × 4 = 16 × (5 × 4)
7) 3×(15 + 20) = (15 × 3)+(3 × 20)