Question

4.4+4.4x12+13x5.6用简便方法怎么做

Answer 1

4.4(1+12)+13x5.6=4.4x13+13x5.6=13(4.4+5.6)=13x10=130 没想到还是慢了给人家。。哎...

Answer 2

(4.4+5.6)x(12+1)

Answer 3

4.4×（1+12+13）+13*1.2

Answer 4

4.4(1+12)+13x5.6=4.4x13+13x5.6=13(4.4+5.6)=13x10=130