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.
(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.