Question

[Pham Trong Bach]

Tính bằng hai cách:

a) 216 : (8 × 9)

b) 476: (17 × 4)

Answer 1

[Cao Minh Tâm]

a) 216 : (8 × 9) = 216 : 72 = 3

216 : (8 × 9) = 216 : 8 : 9 = 27 : 9 = 3

b) 476: (17 × 4) = 476 : 68 = 7

476 : (17 × 4) = 476 : 17 : 4 = 28 : 4 = 7