问题 解答题
脱式计算 (能简算的要简算)
13.7×0.125×8
0.8×[13-(3.12+5.28)]
102×0.561.53×1.7+0.47×1.7.
答案

(1)13.7×0.125×8,

=13.7×(0.125×8),

=13.7×1,

=13.7;

(2)0.8×[13-(3.12+5.28)],

=0.8×[13-8.4],

=0.8×4.6,

=3.68;

(3)102×0.56,

=(100+2)×0.56,

=100×0.56+2×0.56,

=56+1.12,

=57.12;

(4)1.53×1.7+0.47×1.7,

=(1.53+0.47)×1.7,

=2×1.7,

=3.4.

判断题
单项选择题