计算下面各题,能简算得要简算.
5.3﹣3+4.7﹣3
47.5×0.25+
×52.5
+(
+
)×
10.2÷[28×(1﹣
)+
].
计算(能简算的要简算,并写出简算过程).
(+
)×45(100﹣19)÷(1.63+1.07) 18.7﹣3.375﹣6.6256+
÷
×
.
计算下面各题.
①7.3×5.2+14.6
②1379+450÷18×40
③(﹣
)×
④3÷4+×3
⑤(÷
+
)×
⑥÷[
﹣(
+
)].
脱式计算
3978÷39+240 1.42×9.2+0.8×1.42 ×(9﹣
÷5)
÷[
×(
﹣
)]
.
7.08÷(1.25×0.8)=﹣
+
=
×
÷
×
=5.38﹣(2.1+2.38)=
(﹣
)×63=0.5×(2.6﹣2.4)=(0.18+0.9)÷0.9=3﹣
﹣
=