180÷6= 540﹣80= 420÷6= 55÷9= 34+96=98+20= 720÷9= 90﹣18= 640÷4= 123÷4=700÷5= 60+80= 82÷9= 63﹣7= 300÷2=
9.9×8.6+0.86.
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+6.1598.5÷2.5÷45.4÷[2.5×(3.7﹣2.9)] 0.8×(4﹣3.68)÷0.0183.7﹣12.83﹣0.17 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 32.54﹣10.46﹣4.54 18.73+3.85﹣2.73 45.6﹣(83.7﹣78.8)