Question

bài 1 : Tính nhanh

a)2² x 5² x 10² =

b) 60 x 10¹⁰ : 6 x 10

Answer 1

a) 2² . 5² . 10² = 4 . 25 . 100 = 100 . 100 = 10000

b) (60 . 10¹⁰) : (6 . 10)

= (60 : 6) . (10¹⁰ : 10)

= 10 . 10⁹

= 10¹⁰

= 10000000000

Answer 2

a) 2² . 5² . 10² = 4 . 25 . 100 = 100 . 100 = 10000

b) (60 . 10¹⁰) : (6 . 10)

= (60 : 6) . (10¹⁰ : 10)

= 10 . 10⁹

= 10¹⁰

= 10000000000