3 运动定律与简便运算
6÷
=
×10%=
×8= 15÷1%=
1.05﹣
=
÷
= (
﹣
)×
=
×
÷
×
=
+
X=2 X:
=12:
=0.5
÷(1﹣
)×
×
+40%×
÷(
+
) (
+
)×
+
.
脱式计算
(1)49×
×
(2)
×12 (3)36×(
+
)
(4)10.5÷10.5×
(5)(1+
)÷(1﹣
) (6)2.5×3
×0.4×
(7)
×
÷
(8)(
)÷
(9)1.4×3.7+3.7×8.6.
×(
+18)
×
×3×7
﹣
﹣
÷4
×
+
÷
×
÷
.
×16+
+
)×
].
+
+
﹣
﹣(
+
)
+
+
+
4﹣
﹣
﹣
+
.
×
+
×
÷
+
÷
﹣25%)×24.
= ②
③
⑤
⑥
.
.




.
×
×
(
+
+
)×48
﹣
)×12 24×(
+
)×25.
×99+
+9×
+
)
×
.
+12÷
+
÷
+
(
﹣
×9)÷
(
)÷(1﹣
)
×
÷
.
+
+
﹣(
﹣
)
+
+
+
+
+
2﹣
﹣
+
+
+
.
+(
﹣
)×
(
+
)×23+25÷71
÷(3﹣
﹣
) (0.25+
)÷(
﹣
)
.
×9+
÷
﹣
×
﹣
+
+
﹣
.

1
.
×
÷
②2﹣
﹣
③(
)×24
×101﹣
⑤
÷
﹣
×
⑥
÷(
﹣
)
﹣
﹣
﹣(
+
)
+
×
+
÷
; (
﹣
+
)×24;
÷
﹣
;
×
÷
;
×
÷(
+
); 32×(1﹣
)﹣
.
×
﹣
×4+
×5 (
+
﹣
)×24
÷7+
×
÷(
+
) [1﹣(
+
)]÷
×
+
÷
×
÷
+
÷
+
.
÷0.6×
×
+
×
×102﹣
+
)×
(0.75﹣
)×(
+
) (4﹣(
﹣
))×
.
+
﹣
)×24
+
+
)÷
﹣
)×(
÷
)
÷[
﹣(
﹣
)].
×
÷
+
×
﹣
+
+
﹣
)
×
+
×
=
×
×
= (
+
)÷
=
=
÷[
﹣(
+
)]=

(
+
)×
.
+
) 37×
×
÷
×
×
(
+
)÷
×
+
×
.
÷[
×(
+
)] (
﹣
+
)×12
×
+
÷
.
+
+
)
×
+
÷
+
)]÷
×25.

720÷(8+4.5)÷8.
÷0.2×
+(
)÷
﹣(
﹣
)]÷
.
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