10 3 B) C)1972 – [(368 + 932) – 300] D) 1000

Câu 14: (2 đ) Tính:

a) 5 ² . 2 ² + 2 ³ .3 ² b) 15 ⁵ :15 ⁴ – 10 ⁴ :10 ³

b) c)1972 – [(368 + 932) – 300] d) 1000:{2.[100 – (2.5 ² )]}