Question

[Erin]

Tính nhanh:
a) 5,28x32,25+32,25x4,72
b) 0,7x95+1,4x2+0,7
​c) 46,7x99+46+0,7

Answer 1

[阮草~๖ۣۜDαɾƙ]

\(a.=32,25\times\left(5,28+4,72\right)\)

\(=32,25\times10\)

\(=322,5\)

\(c.=46,7\times99+46,7\)

\(=46,7\times99+46,7\times1\)

\(=46,7\times\left(99+1\right)\)

\(=46,7\times100\)

\(=4670\)

Answer 2

[Võ Nguyễn Ánh Mai]

a) 5,28 x 32,25 x 4,72

= 32,25 x ( 5,28 + 4,72)

= 32,25 x 10

= 322,5