3 运动定律与简便运算
直接写数对又快!
350×0.2= 8﹣0.09= 10.45﹣(0.45+2.8)= 42÷0.4= 36÷
=
+
= 0.2﹣
= (3+
)×5= 1÷
×
=
+
÷
=
直接写出得数
5﹣
= 2.5+
= 32×0.25=
×
= 35÷10%=
5.6﹣5.6×(5.6﹣5.6)=
﹣(
﹣0.8)= 1÷(1﹣
)= 0.53= 0.9×99+0.9=
脱式计算.
(1)
×[
﹣(
﹣
)] (2)
÷
+
×
(3)(
+
)÷
+
(4)2.5×12.5×40×0.8 (5)3.64÷4+4.36×25% (6)78×
.
3.125×(1.6+2
)÷(2
﹣0.625)
×
×
+
×
×
+
×
×
+
+
(1
﹣0.8)÷0.63﹣(
÷0.45﹣1
)
(3
+1
×7)÷1
﹣1
67×
+2
×3.75﹣4
×25%
789×788788﹣788×789789.
能简算的要简算.
57.5﹣4.25﹣15.75
÷[
×(
+
)]
×16.31﹣2.31÷
(54+
)÷9 9.25×9.9+92.5% 36÷[(
﹣
)×3].
计算下面各题.
(1)41×
(2)12×(
+
﹣
) (3)375+450÷18×25
(4)(
+
)÷
(5)8﹣6÷2.4 (6)1.2×1.2+8.8×1.2.
用你喜欢的方法计算,要细心哦!
68.26﹣23.4﹣6.6+11.74 (
+
﹣
)×12 8.7×2.9+71×0.87
58×
(
+
)÷
+
(0.75﹣
×(
+
)
脱式计算(能简便的要简便).
0.233﹣(0.133﹣
)+
4.62+9.9+5.38+0.1 4×0.6+0.6÷
0.38×7﹣
+4×
36×(
﹣
)+15 (
+
)×23×19.
脱式计算(第1、2题简算)
(1)
﹣[
﹣(
+
)] (2)5.7×3.6+5.7×5.4+5.7
(3)
÷(
+
×
) (4)(3.8﹣1.8÷2)×1.6.
(1)(111+999)÷[56×(
﹣
)]
(2)200.5×10%+2.005×490+0.2005×5000
(3)3333×3333+9999×8889
(4)
+
+
+…+
(5)若3.5×[6.8﹣(1.6+△÷0.9)÷8.4=0.5,求△的值.





×(
+
)+0.8.
×
+
÷7 (800×
﹣160)÷
62.7﹣59.4÷55×4.
+
=
×4=
=
×3+
÷
=
×24= 16÷
=
)=
②12.5×0.4×0.8×2.5.
﹣(6
) 0.2×
+
×2
+20%×2 (48﹣48×
)÷
.

863+47.95÷0.35﹣529.
÷(3﹣
﹣
) (
+
)×24 17.63×17+17.63×82+17.63.
+
﹣
)
﹣(
+
)]÷
④
×(
﹣
)].
÷[
×(
+
)]
﹣
)÷
+22÷51 (4)
×
+
×
.
×6÷
(
﹣
)×11×6
÷(
﹣
)÷
.
)×9]×6
+2×(
﹣
)
÷5+
×
+3÷4×
+
÷
×
.
÷
×0=
﹣
=
+
=
×13+
×
=
×(
﹣
) 0.25×0.07×8 1÷[(
+
)÷4] 6.8×10.7﹣0.7×6.8.
×5.3+5.7×
﹣0.625 1.25×25×32
.

.







.
×
﹣
×
x:
=12:
,
.
:0.75; ②
分米:
厘米
=51:17;②
×7+4x=850%
×0.6+0.4×7
;③2.25×3.14×4+3.14;④(
﹣
)×17×5.
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