问题
解答题
递等式计算,能简算的要简算:
|
答案
9.7-22.78÷3.4
=9.7-6.7,
=3;
1.05÷0.7+18.9
=1.5+18.9,
=20.4;
0.4×5÷0.4×5
=2÷0.4×5,
=5×5,
=25;
21÷0.25÷0.4
=21÷(0.25×0.4),
=21÷0.1,
=210;
0.125×32×0.25
=(0.125×8)×(4×0.25),
=1×1,
=1;
82.2×9.9
=82.2×(10-0.1),
=82.2×10-82.2×0.1,
=822-8.22,
=813.78.