鸡兔同笼,兔比鸡少7只,脚数共有152只,鸡兔各有多少只?
下面各题怎样简便就怎样算.
5÷(7÷11)÷(11÷16)÷(16÷35)
28.67×67+3
×286.7+573.4×
10×(4
+2
)﹣1÷12.5%
.
神机妙算:(能简算的要写出简算过程)
(1)(9.6﹣10
÷1.25)÷(1
×75%)
(2)
×39+
×25+
×
(3)
÷[32×(1﹣
)+
]
(4)[1
+2
÷(3
﹣1.125)]×
﹣
(5)0.125×
+
×8.25+12.5%+0.374×48+0.62×37.4﹣3.74.
计算:(要求写出计算过程)
(1)
(2)
(3)
(4)
.
列式计算,能简算的简算
(1)2010﹣4848÷9.6×2.4
(2)(
﹣
×
)÷
(3)
×[
﹣(
﹣
)]
(4)(
+
+
)×12+
(5)已知18+[
×1.25+(
+ ×12]÷0.125=86,求出横线上应填的数.
计算:
(1)
(2)
(3)
(4)
.