Question

tinh nhanh 

15,74 + 30,05 - 14,26

23,65 × 3,14 + 46,35 × 3,14

23,96 ÷ 2,5 + 16,04 ÷ 2,5

cac ban nho giup minh nha

 

 

 

 

Answer 1

15,5 + 30,05 - 14,26 = 31,29

23,65 x 3,14 + 46,35 x 3,14 = 924,045

23,96 : 2,5 + 16,04 : 2,5 =16,0008

tk mk nha

Answer 2

15.74 + 30.05 - 14.26 = 30.05 - (15.74 + 14.26) = 30.05 - 30 = 0.05

23.65 x 3.14 + 46.35 x 3.14 =(23.65 + 46.35) x 3.14 = 70 x 3.14 = 219.8

23.96 : 2.5 + 16.04 : 2.5 = (23.96 + 16.04) : 2.5 = 40 : 2.5 = 16

OK !