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脱式计算.(能简算要简算的)①2×3.6+3.6×7+3.6②1.25×32×25③5.42-(3.75-0.58)④34.7-+65.3-⑤××1×1⑥23×+57÷.
题目详情
脱式计算.(能简算要简算的) ①2×3.6+3.6×7+3.6 | ②1.25×32×25 |
③5.42-(3.75-0.58) | ④34.7-![]() ![]() |
⑤![]() ![]() ![]() ![]() | ⑥23×![]() ![]() |
▼优质解答
答案和解析
①2×3.6+3.6×7+3.6,
=3.6×(2+7+1),
=3.6×10,
=36;
②1.25×32×25,
=(1.25×8)×(25×4),
=10×100,
=1000;
③5.42-(3.75-0.58),
=(5.42+0.58)-3.75,
=6-3.75,
=2.25;
④34.7-
+65.3-
,
=(34.7+65.3)-(
+
),
=100-1,
=99;
⑤
×
×1
×1
,
=(
×
)×(
×
),
=1×1,
=1;
⑥23×
+57÷
,
=23×
+57×
,
=(23+57)×
,
=80×
,
=30.
=3.6×(2+7+1),
=3.6×10,
=36;
②1.25×32×25,
=(1.25×8)×(25×4),
=10×100,
=1000;
③5.42-(3.75-0.58),
=(5.42+0.58)-3.75,
=6-3.75,
=2.25;
④34.7-
![](http://hiphotos.baidu.com/zhidao/pic/item/314e251f95cad1c8adab65e07c3e6709c83d51e0.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/d1160924ab18972be5b5990de5cd7b899f510a6d.jpg)
=(34.7+65.3)-(
![](http://hiphotos.baidu.com/zhidao/pic/item/314e251f95cad1c8adab65e07c3e6709c83d51e0.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/d1160924ab18972be5b5990de5cd7b899f510a6d.jpg)
=100-1,
=99;
⑤
![](http://hiphotos.baidu.com/zhidao/pic/item/ac345982b2b7d0a2d82da85ac8ef76094a369a15.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/0824ab18972bd40719bc543a78899e510eb309f9.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/9d82d158ccbf6c817cfab22fbf3eb13532fa402c.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/a8014c086e061d95678cb2ff78f40ad163d9ca2b.jpg)
=(
![](http://hiphotos.baidu.com/zhidao/pic/item/ac345982b2b7d0a2d82da85ac8ef76094a369a15.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/c9fcc3cec3fdfc03b666737fd73f8794a5c226de.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/0824ab18972bd40719bc543a78899e510eb309f9.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/a08b87d6277f9e2f4b5ce0cf1c30e924b999f388.jpg)
=1×1,
=1;
⑥23×
![](http://hiphotos.baidu.com/zhidao/pic/item/d31b0ef41bd5ad6ee71cc82d82cb39dbb7fd3c0b.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/314e251f95cad1c8bbaf53e07c3e6709c83d51e4.jpg)
=23×
![](http://hiphotos.baidu.com/zhidao/pic/item/d31b0ef41bd5ad6ee71cc82d82cb39dbb7fd3c0b.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/d31b0ef41bd5ad6ee71cc82d82cb39dbb7fd3c0b.jpg)
=(23+57)×
![](http://hiphotos.baidu.com/zhidao/pic/item/d31b0ef41bd5ad6ee71cc82d82cb39dbb7fd3c0b.jpg)
=80×
![](http://hiphotos.baidu.com/zhidao/pic/item/d31b0ef41bd5ad6ee71cc82d82cb39dbb7fd3c0b.jpg)
=30.
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