3 运动定律与简便运算
计算下面各题(能简便计算的要简便计算)
13×70﹣4872÷24 9.43﹣2.6+8.57﹣3.4 (2.8﹣1.6)×0.8÷3.2
×
﹣
÷7 (
÷
﹣
)÷
×[
÷(
﹣
)].
用自己喜欢的方法计算
5﹣
﹣
71×99 0.625×0.5+
+
×62.5%
8.37﹣3.25﹣(1.37+1.75) 45×(
+
﹣0.6) 0.25×48.
怎样简便就怎样算
57.5﹣4.25﹣15.75 4.82﹣5.2÷0.8×0.6
×16.31﹣2.31÷
6760÷13+17×25 1.25×32×2.5 35÷
×(1﹣
)
计算下面各题,能简算的要简算.
(1)6
﹣5.08×(0.875﹣
)
(2)42
﹣11
(3)6.58×1
+3.42÷
(4)2.4×(
﹣
)÷1
(5)[4+(1
÷2
×2
.
递等式计算.(能简便的用简便方法)
20
﹣8
﹣6
302×27﹣19944÷36 6.63+2
3.37+3
1.6×63+1
×87﹣50×160% (6.9×
﹣
×0.12)÷0.125 [10﹣(0.5+
)×12]÷1
.
脱式计算(能用简便方法的用简便方法计算)
[(
﹣
)+
]÷
﹣15.37+
﹣34.63 23﹣
×
÷
5.8×99﹣4.2 10.6﹣(6.3+0.125÷12.5%)
脱式计算(能简算的要简算)
①3
﹣2
+5
﹣1
②14.85﹣1.58×8+31.2÷1.2
③2.25×
+2.75÷1
+60%
④9.81×0.1+0.5×98.1+0.049×981.
计算下面各题能简便的尽量简便
(1)24×
(2)
(3)0.374×48+0.62×37.4﹣3.74
(4)0.125×
+
×8.25+12.5%
(5)
÷[(
+
)×
].
用递等式计算.
(1)370×203﹣19266÷38
(2)32×3.1+1÷1.25
(3)
×(39÷35)÷0.9
(4)(9﹣3.06÷
)×1
(5)(3﹣1
×56
(6)
.
用递等式计算,能简算的要简算.
(1)36×9﹣105÷15 (2)
×
+
×
(3)(12.5×16﹣40)÷0.4
(4)
+(
﹣
) (5)
÷
+
×
(6)(
+
+
)×36.
直接写出得数.
65+1.37+4.35= 0.9×1.25×8= 0.55÷1.1= 2.7×5÷2.7×5=
(8+0.8)×1.25= 1﹣
﹣
﹣
= 83×
=
脱式计算,怎样简便就怎样算.
1485+290÷58×16
×[0.75﹣(
﹣
)] 4.2﹣1.38+5.8﹣3.62
80.5×99+80.5 (
﹣0.75)÷(
﹣0.4)
0.7÷[(
﹣
)×24].
怎样简便就怎样算.
(1)8470﹣104×65
(2)168.1÷(4.3×2﹣0.4)
(3)3.64÷4+4.36×0.25
(4)(
﹣
)×4×9
(5)1.3﹣3.79+9.7﹣6.21.
计算(能简算的要简算)
32×0.25×12.5= 10÷[
﹣(
÷
+
)]= 12.85﹣1.17﹣8.83+1.15=
÷[(
+
)÷
]= 75%×3.6+0.75×
+
= (20.2×0.4+7.88)÷4.2=
怎样简便就怎样算.
3280÷16+600 18.75﹣6.2﹣3.8 25×(100+4)
3.75+4.5÷0.18×0.25 25×32×125 (7.6×15+2.4×5)÷126.





÷7+
×
﹣
))
﹣
+
﹚
×99﹢0.79 ﹙1﹣
×
﹚÷﹙
﹢
﹚
×[
﹣
﹚] ﹙
﹣
﹚÷
.
2.5×
.
62
×
×
.
+(
﹣
)÷
÷[(
+
)×
] 1.6×2.2﹢1.8×1.6﹢1.6 12.5×8×4×0.25.

8.76﹣(3.76﹣2.65)
÷2
+
×
. 0.125×0.25×64.
+
+
4×
×25×3.75 (1﹣
﹣
+
)÷
.
+2.5% 9.6﹣11÷7+
×4 
×
+
)÷
÷(
﹣
×
)
÷
×
×
+0.25×
﹣
+
)÷
×
+
÷[(
+
)×
]
+
+
+
+…
.
﹣(2.35+8.6)
.
×2
+2

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