A, 14,35 X 63 + 37 X 14,35 = 14,35 X (63 + 37) = 14,35 X 100 = 1435...

Bài 5:

a, 14,35 x 63 + 37 x 14,35

= 14,35 x (63 + 37)

= 14,35 x 100

= 1435

b, 4/3 x 699 x 0,75

= 4/3 x 699 x 3/4

= (4/3 x 3/4) x 699

= 699

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Đề số 4