3 运动定律与简便运算
脱式计算下面各题
(1)0.125×9.3×0.8;
(2)9.83×1.5+1.5×0.17;
(3)(12+23.1÷0.75)×0.4;
(4)2.8×10.1;
(5)[18.8﹣(4.5+2.7)]÷5;
(6)50﹣13.5﹣6.5.
计算下面各题,能简便的要简便计算.
3.72+5.3+7.28+3.7 7000÷125÷8 1600﹣600÷75+25
35×125×16 78×63﹣78+38×78 (480+120÷15)×50.
简便计算
18.4×2.5×4 11.98×99+11.98 1.25×32×0.25
89.7﹣7.83﹣2.17 50.2÷25÷0.4 0.8×(12.5+25)