计算:++++…++.
计算下列各题,能简算的要简算.(1)5.24+(9.78﹣4.24) (2)27﹣6.75﹣3.25(3)68﹣7.5+32﹣2.5 (4)7.8×10.1.
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+6.15 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)