用竖式计算,带※要验算. 72÷7= 201×8= ※84÷6= 855×4= 630×5= ※96÷7=
计算下列各题,能简算的要简算.8.45﹣(5.45+2.98);3.01+8.2+6.99+1.8;4.3﹣(5.98﹣5.7);5.52﹣0.55﹣0.45.
(1)4.37+15.6×0.32﹣7.6 (2)20÷[4.3﹣(1.9+2.2)](3)3.2÷0.04﹣1.2×50 (4)2.31×0.78+1.69×0.78(5)5.4与4.2的积加上1.2除7.2的商,和是多少?(6)8.7减去2.4与0.8的和所得的差,再乘4.8,积是多少?
下面各题能简算的要用简便计算.1.36+4.85+2.64+6.15 98.5÷2.5÷4 5.4÷[2.5×(3.7﹣2.9)]0.8×(4﹣3.68)÷0.01 83.7﹣12.83﹣0.17 5.96+13×(3.2﹣3.12)
计算下面各题,能简算的要简算.0.9+1.08+0.92+0.1 32.54﹣10.46﹣4.5418.73+3.85﹣2.73 45.6﹣(83.7﹣78.8)
下面各题,能用简便方法计算的用简便方法计算:2.5×12.5×32 6.4÷2.5÷0.4 5.4×0.36+0.64×5.49÷0.75+9÷0.25 17.2﹣0.71﹣0.29 8.6+1.4÷2.5.