早教吧作业答案频道 -->其他-->
用你喜欢的方法进行计算．114×17.6+36÷45+2.64×12.547×231213+16×17+17×413139×137138+137×1138．
题目详情
用你喜欢的方法进行计算．
1
×17.6+36÷
+2.64×12.5
×23
+16×
+
×
139×
+137×
．
×17.6+36÷
+2.64×12.5
×23
+16×
+
×
139×
+137×
．
1 1 4 4
+2.64×12.5
×23
+16×
+
×
139×
+137×
．
4 4 5 5
×23
+16×
+
×
139×
+137×
．
4 4 7 7
+16×
+
×
139×
+137×
．
12 12 13 13
+
×
139×
+137×
．
1 1 7 7
×
139×
+137×
．
1 1 7 7
139×
+137×
．
4 4 13 13
+137×
．
137 137 138 138
．
1 1 138 138
1
| 1 |
| 4 |
| 4 |
| 5 |
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 1 |
| 4 |
| 4 |
| 5 |
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 1 |
| 4 |
| 4 |
| 5 |
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 4 |
| 5 |
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 1 |
| 7 |
| 4 |
| 13 |
139×
| 137 |
| 138 |
| 1 |
| 138 |
| 4 |
| 13 |
| 137 |
| 138 |
| 1 |
| 138 |
| 137 |
| 138 |
| 1 |
| 138 |
| 1 |
| 138 |
▼优质解答
答案和解析
（1）1
×17.6+36÷
+2.64×12.5
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
×23
+16×
+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 14 4 4×17.6+36÷
+2.64×12.5
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
×23
+16×
+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 45 5 5+2.64×12.5
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
×23
+16×
+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 47 7 7×23
+16×
+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
12 12 1213 13 13+16×
+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7+
×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 413 13 13
=
×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 47 7 7×
+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
311 311 31113 13 13+16×
+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7+
×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 413 13 13
=
×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×
+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1244 1244 124413 13 13+16×
+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7+
×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 413 13 13
=
×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×（
+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1244 1244 124413 13 13+16+
）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
4 4 413 13 13）
=
×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 17 7 7×112
=16
（3）139×
+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
137 137 137138 138 138+137×
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
1 1 1138 138 138
=139×
+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
137 137 137138 138 138+
=（139+1）×
=140×
=（138+2）×
=138×
+2×
137 137 137138 138 138
=（139+1）×
=140×
=（138+2）×
=138×
+2×
137 137 137138 138 138
=140×
=（138+2）×
=138×
+2×
137 137 137138 138 138
=（138+2）×
=138×
+2×
137 137 137138 138 138
=138×
+2×
137 137 137138 138 138+2×
137 137 137138 <
138 138<
举报
问题解析 问题解析
（1）（2）通过数字转化，运用乘法分配律计算
（3）原式变为139×
+
，运用乘法分配律简算． （1）（2）通过数字转化，运用乘法分配律计算
（3）原式变为139×
+
，运用乘法分配律简算．
137 137 137138 138 138+
，运用乘法分配律简算．
137 137 137138 138 138，运用乘法分配律简算．
名师点评 名师点评
本题考点： 本题考点：
分数的四则混合运算． 分数的四则混合运算．
考点点评： 考点点评：
此题考查了乘法分配律的灵活运用情况． 此题考查了乘法分配律的灵活运用情况．
扫描下载二维码
扫描下载二维码
©2019 作业帮 联系方式：service@zuoyebang.com
作业帮协议作业帮协议
var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "3";
| 1 |
| 4 |
| 4 |
| 5 |
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 4 |
| 4 |
| 5 |
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 5 |
=1.25×17.6+36×1.25+26.4×1.25
=1.25×（17.6+36+26.4）
=1.25×80
=100
（2）
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 13 |
=
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 7 |
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 311 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1244 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 13 |
=
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1244 |
| 13 |
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 4 |
| 13 |
=
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 7 |
=16
（3）139×
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 1 |
| 138 |
=139×
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
=（139+1）×
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
=140×
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
=（138+2）×
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
=138×
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 |
| 138 |
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
| 137 | ||||
| 138 | <
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
作业帮用户
2017-10-11
举报
- 问题解析
- （1）（2）通过数字转化，运用乘法分配律计算
（3）原式变为139×
+137 138
，运用乘法分配律简算．137 138
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
作业帮用户
2017-10-11
举报
作业帮用户作业帮用户
2017-10-112017-10-11
举报
举报
- 问题解析
- （1）（2）通过数字转化，运用乘法分配律计算
（3）原式变为139×
+137 138
，运用乘法分配律简算．137 138
（3）原式变为139×
| 137 |
| 138 |
| 137 |
| 138 |
（3）原式变为139×
| 137 |
| 138 |
| 137 |
| 138 |
| 137 |
| 138 |
| 137 |
| 138 |
| 137 |
| 138 |
- 名师点评
-
- 本题考点：
- 分数的四则混合运算．
-
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
- 本题考点：
- 分数的四则混合运算．
- 本题考点：
- 分数的四则混合运算．
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
- 考点点评：
- 此题考查了乘法分配律的灵活运用情况．
扫描下载二维码
扫描下载二维码
©2019 作业帮 联系方式：service@zuoyebang.com
作业帮协议作业帮协议
var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "3";
看了 用你喜欢的方法进行计算．11...的网友还看了以下：
(根号6-2倍的根号15)×根号3-6倍的根号2分之1计算：①、根号12÷根号6×根号6分之1②、 2020-05-16 …
excel 区域内数字统计如何统计下面这组数据：A B C D E F G H I1 6 9 12 2020-05-16 …
帮我破解下这串数字什么意思9(2)4(3)6(2)2(1)4(3)3(1)4(3)9(1)6(3) 2020-05-17 …
1/1=11/2+2/2+1/2=21/3+2/3+3/3+2/3+1/3=31/4+2/4+3/ 2020-06-02 …
1.直接写得数1/2+1/31/2+1/41/3+1/51/4+2/31/3+3/51/6+2/7 2020-06-13 …
（选做，适合选修3-3的同学）有一台热机，从热源每小时吸收7.2×107J的热量，向冷凝器放出3. 2020-07-18 …
观察各式3*1=3,3*3=9,3*3*3=27,3*3*3*3=81...观察各式3*1=3,3 2020-07-19 …
Tn=3×3+5×3＾2+7×3＾3+.+(2n-1)×3＾n-1+(2n+1)×3＾n（3＾2表 2020-07-29 …
（选做，适合选修3-3的同学）有一台热机，从热源每小时吸收7.2×107J的热量，向冷凝器放出3.6 2020-12-18 …
（选做，适合选修3-3的同学）有一台热机，从热源每小时吸收7.2×107J的热量，向冷凝器放出3.6 2020-12-18 …