四则运算 简便运算(2)
计算,能简便的要简便计算。
(1)(270-30×9)÷5.5 (2)36×19-19×26
(3)25×45+75×45 (4)38×101
(5)5.63+8.8+4.37+1.2 (6)750-(550-300)÷25
(7)6.38-2.4+5.62 (8)125×16
(9)55.83-(8.2+5.83) (10)2100÷5÷4
(11)25×(40+4) (12)30.5-5.3-1.7
(13)27.5-9.8-0.2 (14)58+(124-24×3)
(15)8157-(103+157+597) (16)25×32×125
(17)4.36-(2.01+2.29)+0.48 (18)72×99+72
参考答案
(1)0 (2)190 (3)4500 (4)3838 (5)20
(6)740 (7)9.6 (8)2000 (9)41.8 (10)105
(11)1100 (12)23.5 (13)17.5 (14)110 (15)7300
(16)100000 (17)0.54 (18)7200