脱式计算,能简算的要简算.(1)9003-554÷18×27(2)112+(512+12)÷1124(3)1110÷[56×(37-38)](4)4.3-(0.6+2.4÷12)(5)99×425(6)48×(14+16-112)-数学
题文
脱式计算,能简算的要简算. (1)9003-554÷18×27 (2)
(3)1110÷[56×(
(4)4.3-(0.6+2.4÷12) (5)99×
(6)48×(
|
答案
(1)9003-554÷18×27, =9003-
=9003-831, =8172; (2)
=
=
=2
(3)1110÷[56×(
=1110÷[56×
=1110÷[24-21], =1110÷3, =370; (4)4.3-(0.6+2.4÷12), =4.3-(0.6+0.2), =4.3-0.8, =3.5; (5)99×
=(100-1)×
=100× |