3 运动定律与简便运算
脱式计算.(能简算的要简算)
+
+
+
12.04﹣5.37﹣4.63
+
+
)×30;
×[
÷(
×
)] 32×71.1+28.9×32 (
+
)÷(
÷4﹣
)
直接写出得数.
1÷
×
= 3:0.9= 9.9×100%=
100×9.8﹢0.2= 50%÷25%═ 9×8=
0.1+99×0.1= 125×29×8= 0.1+99=.
计算下面各题,能简便的要简便.
(
×
)×
1﹣(
+
)×
×72.8+72.8×
24×(
+
﹣
) (
+(
﹣
))×
1.25×38+125%×3﹣12.5÷10.






0.25
+(
)
.
﹣
+
﹣
﹣(
﹣
)
﹣(
+
)
×
+
×
(2)0.6×
+60%×
+
×
(3)45
÷9
+
) (5)(
﹣
)÷
(6)(0.75﹣
)×(
+
)
+
)×30
×7+3÷
+
)×
×
+
[1﹣(
+
)]÷
+
﹣
+
+
+(
﹣
)
+
)
+
+
+
﹣(
﹣
)
.
﹣
×
﹣
2﹣
﹣
(
+
+
)×60.
÷7+
÷3 6.75×2.4+4.25×2.4﹣2.4 2﹣
÷
﹣
÷[
×(
+
)].
﹣
﹣
+
+(
﹣
)
+
﹣
﹣
+
﹣
﹣
+
×8﹣
+
)
×
+
×
×3.2+6.8×0.5
×
÷(
)
11.28﹣(
)
÷
.
﹣11÷
×10×
÷(
﹣0.2) 2﹣
÷
﹣
.
)÷(
+2) 9﹣(
+
)×24 (2﹣2×
)÷
×15+
÷
.
×
÷
×
+
×
+
) (
﹣
÷
)×
×
+
+
.
﹣
﹣(
+
)
+
﹣
,
.
÷27×
.
×
﹣
÷
(2)
×
÷(
﹣
)
= (2)
= (3)
= (4)
= (5)
=
= (7)
= (8)
= (9)
= (10)
=


.
÷(
÷
+
)
×
÷
÷
×13+
×13
+
)×9×17
+
+
+
+
+
.
÷3+
×
(
﹣
)×15
﹣
×
﹣
÷
﹣
÷
+
×
(
)÷
+
.
﹣
÷3 (
﹣
+
)×12
÷[
×(
+
)]
×
+
÷
.
.
﹣
+
+
+
﹣(
+
) ④
+
+
+
+
+
+
+
25×(
+
)×30.
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