问题
解答题
脱式计算,能简算的要简算.
0.89×4.8+0.89×5.2
9.4×0.96÷(5.4÷0.9)
(8+0.8)×1.25
0.175÷0.25÷0.4.
答案
(1)0.89×4.8+0.89×5.2
=0.89×(4.8+5.2)
=0.89×10
=8.9;
(2)9.4×0.96÷(5.4÷0.9)
=9.4×0.96÷6
=9.024÷6
=1.504;
(3)(8+0.8)×1.25
=8×1.25+0.8×1.25
=10+1
=11;
(4)0.175÷0.25÷0.4
=0.175÷(0.25×0.4)
=0.175÷0.1
=1.75.