Question

【题目】递等式计算，能简算的要简算。

9.6÷0.25×0.4 1.3×6.4×1.25 0.6＋1÷(2.7－2.66)

35.2-1.1×8.4 （12.5+1.25+0.125）× 0.8 5.4＋5.4×5.4－1.4×5.4

Answer 1

【答案】15.36；10.4；25.6

25.96；11.1；27

【解析】

9.6÷0.25×0.4

=38.4×0.4

=15.36

1.3×6.4×1.25

=（1.3×0.8）×（8×1.25）

=1.04×10

=10.4

0.6＋1÷(2.7－2.66)

=0.6+1÷0.04

=0.6+25

=25.6

35.2-1.1×8.4

=35.2-9.24

=25.96

（12.5+1.25+0.125）× 0.8

=12.5× 0.8+1.25× 0.8 +0.125× 0.8

=10+1+0.1

=11.1

5.4＋5.4×5.4－1.4×5.4

=5.4×（1+5.4-1.4）

=5.4×5

=27