3 运动定律与简便运算
脱式计算,能简算的要简算.
0.48×8.5﹣3.5 100.1×7.4
1.45×1.02﹣1.45×0.02 24.5×0.8×1.24
444×0.25 4.78×9.9+0.478.
计算,能简算的要简算.
125×17×8 35×102 56×67+33×56
12.7+0.98+3.02+5.3 5.6﹣1.71﹣0.29 24.52﹣(7.5+4.52)
脱式计算(带*号的要简算)
19.8×0.54÷0.081 *0.25×32×1.25 1.89÷0.54﹣7.1÷2.5
*0.25×26×40 *8.7×99 *3.14×7.9+31.4×0.21.
计算:
①5.75﹣8.63+(9.25﹣2.37)
②15.7﹣8
﹣2
③(44×4)×25
④999×363+7364
⑤9.8+99.8+999.8+9999.8+99999.8
⑥1﹣
+
+
+
⑦(1+
+
+
)×(
+
+
+
)﹣(1+
+
+
+
)×(
+
+
)
⑧
×48.
直接写出得数:
0.77+1.33= 20×70%= (0.18+9)÷9=
1.87+5.3= 12.6﹣1.7= 200×(1﹣40%)=
×75%= 45÷90%=
×99+
=
下面各题,怎样算简便就怎样算.
6.8÷4﹣1.2×25%+4
×0.25 3.7×
+5.3×0.75+
38×
9.9+99.9+999.9 (
+
)×24×15.
脱式计算,能简算的要简算.
(7.6﹣1
+80%)÷(1﹣30%) 75%×0.375+1.625×
﹣0.75 24﹣4.62﹣5.38
1.25×2.5×32 [
﹣(25%+
)]÷10%
÷[(
﹣
)×
].
168.1÷(4.3×2﹣0.4)
[(
)×3].
=
=
19.62﹣6.4﹣3.6 6×0.11+57.6×0.89
×57+
+
③0.25×32×12.5% ④
÷
+
×
.
(2﹣0.6)÷
﹣
(
)÷
.
+1
﹣0.07×50)×1
]
+
﹣
)
×0.8+
÷1.25.
×
+
)÷(11﹣
) (
+
×
)÷
÷[(
+
)×2] 128×
﹣
×128﹣2÷
×0.375+
÷
×1
+125%+0.625×1.25.
×
×
(
+
)×24
×101﹣
×0.2+0.8×
)
+
)×23+
.
)÷0.12=
= ②42÷10%= ③48×12.5%= ④9×
= ⑤
=
= ⑦2800÷20= ⑧16.6﹣5.54= ⑨7.2÷0.08=
÷
×
)
×16.31﹣
×2.31 2﹣
÷
﹣
+
÷
.
﹣(
﹣
)÷
÷[(
﹣
)×
]
÷23+
×
.
④0.75×99﹣
%
)÷9 36÷[(
﹣
)×3]
×17﹣17×
80.7×8.7+8.07×13.
×10.1﹣62.5%×
=
+4.58×
﹣4÷3.
+15×75% 2.7÷(4﹣82%﹣18%)
÷9+
×
(
﹣
)÷(2﹣
)
﹣0.85+25%
﹣
) ②45×
+56×37.5%﹣0.375 ③[1﹣(
+
)]÷
﹣
+
﹣
⑤
×8÷
×5 ⑥
×(
×17+
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