3 运动定律与简便运算
计算,能简算的要简算:
3×(
+
)﹣
÷
+
×
999×222+333×334
2011×
÷〔
﹣(
﹣
)〕 (4.71÷0.6)×(3
﹣3.375)+2
.
找窍门,怎样算简便就怎样算.
(1)
×
﹣
÷
(2)4﹣
﹣
(3)3
×[(1
+
)×2
]
(4)[
﹣0÷(
+
)]×1
(5)20
×83+1.7×200
(6)
÷[(
﹣
)÷
].
用递等式计算(能简算得就要简算)
×
+
×
(
+
+
)÷
6.5×6+3.5×6﹣35
1
×
+
×0.125﹣
0.35÷[(
﹣
)×3]
÷(
+
)÷
﹣10.





+3
) ②15
﹣4
﹣7
﹣4+3
④6.65﹣4
+3
.
÷[10×(
+
)]
×
+
×
+
)÷
﹣
×
×
÷
(
+
﹣
)×30.
+(
+
)
+
+
﹣
﹣
+
+
+
.


.
+
)÷
+
12×(
+
﹣
) 8.5﹣(5.6+4.8)÷1.3.
36×(
+
﹣
)
(2)
(3)
(5)
(6)
.
=
= 1÷
=.

.
+(
﹣
); 4
﹣2.5+1
;
;
×
÷
×
+
÷8 (15﹣15×
)×
﹣0÷(
+
)]×
(34+
)÷17 (
+
)×
÷
.
÷7+
×
36×(
+
)
×
÷(
﹣
)
÷(8×
﹣
×7÷
2.8×(
+
)
+14×
101×
6÷
﹣
+
+
(2)
+
﹣
(3)
+
﹣
(5)
(6)
.
﹣
+
+
+
﹣(
﹣
)
+
﹣
﹣(
﹣
)
+(
﹣
) 6﹣
﹣
+
+
+
.
②
③
⑤
⑥
.
﹣(
) 
32﹣
﹣
.
﹣
÷[
﹣(
+
)]
×24+
÷
(
+
)×
+
.
×
+
×
+
×
﹣
÷
﹣
+
) 7÷
﹣
÷7
÷[
×(
﹣
)].
﹣
+
﹣(
+
)
﹣(
﹣
)
﹣
+(
﹣
)
+
+
.
+
﹣
)
[
(
)]
×58+42÷8
÷[(
+
)÷

,
.
,
.
÷9+
×
×70)÷
﹣
÷(
﹣
) 80×
÷
×
÷
﹣
×
.
(2)
(3)
+
﹣
)×24 (5)
×
+
×3.2+5.6×0.5+1.2×50%
+
)﹣
24×(
+
+
)
÷7+
×
×28.
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