Question

Tính giá trị của mỗi biểu thức sau:

a) 250 + 250 x 2                                                                                   

(250 + 250) x 2                                                                                       

b) 750 – 50 x 5

(750 – 50) x 5

c) 210 x 4 – 4 x 210

3 x (270 : 9) x 0

Answer 1

a) \(250 + 250 × 2 = 250 + 500 = 750 \\ (250 + 250) × 2 = 500 × 2 = 1 000\)

b)\( 750 – 50 × 5 = 750 – 250 = 500\\ (750 – 50) × 5 = 700 × 5 = 3 500\)
c) \(210 × 4 – 4 × 210 = 840 – 840 = 0\\ 3 × (270 : 9) × 0 = 0\)