Question

Tính bằng 2 cách:

a.      360 : (3 x 5)                                                                  b. 1440 : (2 x 5)

Answer 1

C1:\(a,360:\left(3.5\right)\)

\(=360:15\)

\(=24\)

C2:\(\left(360:3\right):5\)

\(=120:5\)

\(=24\)

C1:\(b,1440:\left(2.5\right)\)

\(=1440:10\)

\(=144\)

C2:\(\left(1440:2\right):5\)

\(=720:5\)

\(=144\)

Answer 2

\(a,C1:360:\left(3\times5\right)=360:15=24\\ C2:360:\left(3\times5\right)=\left(360:3\right):5=120:5=24\\ b,C1:1440:\left(2\times5\right)=1440:10=144\\ C2;1440:\left(2\times5\right)=\left(1440:2\right):5=720:5=144\)

Answer 3

C1:

C2:

C1: