问题
解答题
脱式计算(能简算要简算)
|
答案
(1)(66-32×1.2)÷0.25,
=(66-38.4)÷0.25,
=27.6÷0.25,
=110.4,
(2)10×
+17×75%-7×0.75,3 4
=10×0.75+17×0.75-7×0.75,
=(10+17-7)×0.75,
=20×0.75,
=15,
(3)0.25×[5
×(3-2.5×1 5
)],7 8
=0.25×[5
×(3-1 5
)],35 16
=0.25×[5
×1 5
],13 16
=
×1 4
×26 5
,13 16
=1
,9 160
(4)9.99×22.2+33.3×3.34,
=9.99×11.1×2+11.1×3×3.34,
=11.1×(9.99×2+3×3.34),
=11.1×(19.98+10.02),
=11.1×30,
=333.