问题 解答题
下面各题怎样算简便就怎样算.
26.9+72.8÷5.6

3.4×11.3+3.4×8.7

62×101-62
1.25×3.2×0.253.6÷1.5÷40.12×50+53.4.
答案

①26.9+72.8÷5.6

=26.9+13

=39.9

②1.25×3.2×0.25

=(1.25×8)×(0.4×0.25)

=10×0.1

=1

③3.4×11.3+3.4×8.7

=3.4×(11.3+8.7)

=3.4×20

=68

④3.6÷1.5÷4

=3.6÷(1.5×4)

=3.6÷6

=0.6

⑤62×101-62

=62×(101-1)

=62×100

=6200

⑥0.12×50+53.4

=6+53.4

=59.4

选择题
单项选择题