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﹣
﹣
=
脱式计算.(能简算的要简算)
(1)0.125×
+1.875÷4(2)27×99
(3)30.1﹣16.8÷3.5×6.2(4)
×2.5×
×0.4
(5)
÷[
(﹣
)÷
](6)(
﹣
×
)÷
.