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用简便方法计算下面各题.(34-23)×243.75+3.75-2.752.5×12.5×8×4813÷7+17×513.
题目详情
用简便方法计算下面各题.
(
-
)×24
3.75+3.75-2.75
2.5×12.5×8×4
÷7+
×
.用简便方法计算下面各题.
(
-
)×24
3.75+3.75-2.75
2.5×12.5×8×4
÷7+
×
.
-
)×24
3.75+3.75-2.75
2.5×12.5×8×4
÷7+
×
.
3 4 3 3 4 4
)×24
3.75+3.75-2.75
2.5×12.5×8×4
÷7+
×
.
2 3 2 2 3 3
÷7+
×
.
8 13 8 8 13 13
×
.
1 7 1 1 7 7
.
5 13 5 5 13 13
(
3 |
4 |
2 |
3 |
3.75+3.75-2.75
2.5×12.5×8×4
8 |
13 |
1 |
7 |
5 |
13 |
(
3 |
4 |
2 |
3 |
3.75+3.75-2.75
2.5×12.5×8×4
8 |
13 |
1 |
7 |
5 |
13 |
3 |
4 |
2 |
3 |
3.75+3.75-2.75
2.5×12.5×8×4
8 |
13 |
1 |
7 |
5 |
13 |
3 |
4 |
2 |
3 |
3.75+3.75-2.75
2.5×12.5×8×4
8 |
13 |
1 |
7 |
5 |
13 |
2 |
3 |
8 |
13 |
1 |
7 |
5 |
13 |
8 |
13 |
1 |
7 |
5 |
13 |
1 |
7 |
5 |
13 |
5 |
13 |
▼优质解答
答案和解析
(1)(34-23)×24=34×24-23×24=18-16=2(2)3.75+3.75-2.75=7.5-2.75=4.75(3)2.5×12.5×8×4=(2.5×4)×(12.5×8)=10×100=1000(4)813÷7+17×513=813×17+17×513=17×(813+513)=17×1=17...
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