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a)
7 x 4 = 7 * 2 x 2 =
= 14 x 2 =
2 x 14 =
= 14 + 14 =
= 28
=
7*2= 14
7 x 8 = 7 * 4x2 =
= 28 x 2 =
= 2 x 28 =
= 28 + 28 =
= 56
c) 9 x 2 = 18
9 x 4 = ?
9 x 8 = ?
b) 6 x 2 = 12
6 x 4 = ?
6 x 8 = ?​