Question

【题目】用自己喜欢的方法计算下面各题

63.5×25%+0.25×36.5 （++20%）×25 1.25×3.5×8

5.6×0.7＋0.2×5.6＋0.56 9+99+999+9999+

Answer 1

【答案】25；22；35

5.6；11110

【解析】

63.5×25%+0.25×36.5

=63.5×0.25+0.25×36.5

=（63.5+36.5）×0.25

=100×0.25

=25

1.25×3.5×8

=1.25×8×3.5

=10×3.5

=35

5.6×0.7＋0.2×5.6＋0.56

=5.6×0.7＋0.2×5.6＋5.6×0.1

=5.6×（0.7+0.2+0.1）

=5.6×1

=5.6

=10+100+1000+10000

=11110