Question

Tinh nhanh

a) 32,4.6.34+3,66+32,4+0,5

b) 0,9.438.2+0,18.2520+0,6.310.3

Answer 1

b) 0,9.438.2 + 0,18.2520 + 0,6.310.3

= 0,9.2.438 + 0,18.2520 + 0,6.3.310

= 0,18.438 + 0,18.2520 + 0,18.310

= 0,18.(438 + 2520 + 310)

= 0,18.3268

= 588,24

Answer 2

a: \(=32,4\left(6,34+1\right)+3,66+0,5\)

\(=32.4\cdot7.34+4.16\)

\(=241,976\)

b: \(=1.8\left(438+252+310\right)=1.8\cdot1000=1800\)