3 运动定律与简便运算
计算:
①+
﹣
= ②3.2﹣0.85﹣1
= ③3.2×
﹣
÷2= ④1.725×4×0.5=
⑤(+
)÷
= ⑥1.8×0.72+1.28×1.8= ⑦2÷(
﹣
)= ⑧57.6÷[(1.25+25%)×0.32]=.
脱式计算,能简便的用简便方法计算
(1)0.4×580﹣195÷6.5 (2)7.6÷1.25÷8 (3)(+
)÷
﹣
(4)÷
﹣
×
(5)18.64﹣(
+4.64) (6)
÷[8×(
﹣
)].
(1)0.125×0.32×5=
(2)=
(3)=
(4)35000÷28×8=
(5)222×555=
(6)=
(7)0.125×0.25×0.5×64=
(8)=
直接写得数
1÷0.01= 100×0.4%= ÷
÷6= 12÷(
+
)=
÷10%= 8﹣8÷9= 6﹣
+
= (
+
﹣
)×30=
×
= 1÷0.1×1÷0.1=
÷
×6=
﹣
×
=
计算下面各题(能简算的要简算).
360÷15﹣2.5×14 ×〔
÷(
﹣
)〕 25×1.25×32
5.25﹣(+4.25)
×2012 3.5×98+0.2×35.
脱式计算(能简算要简算)
(1)(66﹣32×1.2)÷0.25 (2)10×+17×75%﹣7×0.75
(3)0.25×(5(3﹣2.5×
)) (4)9.99×22.2+33.3×3.34.
计算下题,能简便的要简便计算,并写出必要的过程.
①6.6﹣48×÷4.8 ②
×0.6+
÷
③63×
+36×
+75%
④[3.6﹣(+1÷3)]×
⑤0.008×0.000125+0.0125÷0.04 ⑥1﹣
﹣
﹣
﹣
.
直接写得数.
698+560= 1200﹣909= 1.3+0.41= 500÷5÷20=
2.7﹣1.58= 2.5×0.4= 1.4÷3.5= 3.65+0.36×0=
452.4÷48.9≈ 201.2×39≈ =
=
1.65+0.8= 3.6﹣0.36= 1÷= 8.4+99×8.4=
=
=
=
=
用你最喜欢的方法计算.
1.25×0.25×32
(0.25+)÷(
﹣
)
×0.25+
×
[(8.7﹣7.5)÷0.2]×0.15
3.75×58.3÷58.3×6.54÷3.75÷65.4
56×(+
﹣
)