问题 计算题
脱式计算。(能简算的要简算)
(1)2.87×(6.3-2.3)=(2)54.7-45.3÷15=
(3)2.008×1999+2.008=(4)10.8÷[(5.28-1.68)×0.3]=
(5)3.69÷(1.23×0.5)=(6)(5.28+5.28+5.28+5.28)×0.25=
答案

(1)原式=2.87×4

                =11.48(2)原式=54.7-3.02

                =51.68

(3)原式=2.008×(1999+1)

               =4016(4)原式=10.8÷1.08

               =10

(5)原式=3.69÷1.23÷0.5

               =6(6)原式=5.28×(4×0.25)

                =5.28

单项选择题
单项选择题