问题
解答题
80.64÷25.6-3.14
0.42÷(0.3×0.7)
8.7÷2.5÷4
17.5÷12.5×1.4.
答案
(1)80.64÷25.6-3.14,
=3.15-3.14,
=0.01;
(2)0.42÷(0.3×0.7),
=0.42÷0.21,
=2;
(3)8.7÷2.5÷4,
=8.7÷(2.5×4),
=8.7÷10,
=0.87;
17.5÷12.5×1.4,
=1.4×1.4,
=1.96.