3 运动定律与简便运算
下面各题怎样算简便就怎样算.
(1)360÷15﹣2.5×1.4 (2)
×
+
÷
(3)6÷
﹣
÷6
(4)
﹣
+
﹣
(5)3.5×98+3.5×2 (6)
×[
÷(
﹣
)]
(1)
= (2)
=
(3)
= (4)9999+99992=
(5)11×12×13﹣12×13﹣260= (6)101×99×999+999=
(7)
= (8)1880×199.9﹣1999×187.9=
2﹣
÷
﹣
8.1÷(5﹣0.005×700×1
)
〔1.8﹣1.8×(1.8﹣1.8)〕÷0.36 〔5﹣1.7÷(2
﹣1
)〕×1
51
÷
+71
÷
+91
÷
6÷〔35×(
+
)〕×4.8 1
+3
+5
+7
+9
.
=
=
)×12=
×
+
+
﹣
×
45×(
+
﹣
)
﹣
+
)×24 125×25×32 (2×
+
÷2)×
.

125×83﹣25×15.
÷[
×(
﹣
)] 
×
﹣
.
.
+(
﹣
)÷
2450﹣450÷18×25
﹣
.
)×9×17 (2)(2+
)×
(3)32×
+3)一(7×
÷7×
(6)
.
7×
1﹣(
)÷
÷[
×(
)].
×
+
×
+(
﹣
)÷
(80﹣9.8)×0.6﹣2.12
÷10﹣
﹣3.8﹣
.
×
+2
×
+
+
)×7×5 12﹣
÷
×[
﹣(
﹣
)]
+
×(
﹣
)
+
×15÷
(
+
)×24×
18×(
+6×
)
÷(
﹣
)×
[15×(50%+
)]÷
÷[
×(
+
)].
﹣
×
)÷
13.8﹣
+6.2﹣
×[
÷(
+
)].
+
×
÷
②
﹣(
) ③(1﹣25% )×101﹣
⑤
÷[
×(
﹣
)] ⑥
×2001+
:x=
:(1.6×5)

.

88×1.25×100÷4.4.
+2.2×0.25 250×
+250×
1999+9992.
÷9×
×12.5=
×
+
×
+
÷
×
2.2×3.7+6.3×2.2.
12×8.9+1.2×11
.
=
=
=
÷9+
×
(
)×
+
(
+
)×48
+
)×15
+
+
+
+
.
+
)÷(1﹣
)
+
×
+
×
+
×
(
)
×
.
.
)÷
10 57×
×1.25 9.45﹣(
)﹣
.
×15﹣(5
+5
)
×54= (9
+7
)÷(
) 97×2000﹣96×2001.
.
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