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脱式计算（能简便算的要简算，写出主要步骤）①13.6-2.8+7.4-7.2②817÷23+123×917+123③（12+13）÷35-1718④（14-0.1÷2）×513+1213．
题目详情
脱式计算（能简便算的要简算，写出主要步骤）
①13.6-2.8+7.4-7.2
②
÷23+
×
+
③（
+
）÷
-
④（
-0.1÷2）×
+
．
÷23+
×
+
③（
+
）÷
-
④（
-0.1÷2）×
+
．
8 8 17 17
×
+
③（
+
）÷
-
④（
-0.1÷2）×
+
．
1 1 23 23
+
③（
+
）÷
-
④（
-0.1÷2）×
+
．
9 9 17 17
③（
+
）÷
-
④（
-0.1÷2）×
+
．
1 1 23 23
+
）÷
-
④（
-0.1÷2）×
+
．
1 1 2 2
）÷
-
④（
-0.1÷2）×
+
．
1 1 3 3
-
④（
-0.1÷2）×
+
．
3 3 5 5
④（
-0.1÷2）×
+
．
17 17 18 18
-0.1÷2）×
+
．
1 1 4 4
+
．
5 5 13 13
．
12 12 13 13
①13.6-2.8+7.4-7.2
②
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
③（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
③（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
③（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
③（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 9 |
| 17 |
| 1 |
| 23 |
③（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 1 |
| 23 |
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 3 |
| 5 |
| 17 |
| 18 |
④（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 17 |
| 18 |
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
| 5 |
| 13 |
| 12 |
| 13 |
| 12 |
| 13 |
▼优质解答
答案和解析
（1）13.6-2.8+7.4-7.2
=（13.6+7.4）-（2.8+7.2）
=21-10
=11；
（2）
÷23+
×
+
=（
+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
8 8 817 17 17÷23+
×
+
=（
+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 123 23 23×
+
=（
+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
9 9 917 17 17+
=（
+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 123 23 23
=（
+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
8 8 817 17 17+
+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1． +
9 9 917 17 17+1）×
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 123 23 23
=2×
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 123 23 23
=
；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
2 2 223 23 23；
（3）（
+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 12 2 2+
）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 13 3 3）÷
-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
3 3 35 5 5-
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
17 17 1718 18 18
=
÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
5 5 56 6 6÷
-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
3 3 35 5 5-
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
17 17 1718 18 18
=
-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
25 25 2518 18 18-
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
17 17 1718 18 18
=
；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
4 4 49 9 9；
（4）（
-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 14 4 4-0.1÷2）×
+
=（
-0.05）×
+
=
×
+
=
+
=1．
5 5 513 13 13+
=（
-0.05）×
+
=
×
+
=
+
=1．
12 12 1213 13 13
=（
-0.05）×
+
=
×
+
=
+
=1．
1 1 14 4 4-0.05）×
+
=
×
+
=
+
=1．
5 5 513 13 13+
=
×
+
=
+
=1．
12 12 1213 13 13
=
×
+
=
+
=1．
1 1 15 5 5×
+
=
+
=1．
5 5 513 13 13+
=
+
=1．
12 12 1213 13 13
=
+
=1．
1 1 113 13 13+
=1． +
12 12 1213 13 13
=1．
=（13.6+7.4）-（2.8+7.2）
=21-10
=11；
（2）
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 9 |
| 17 |
| 1 |
| 23 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 23 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1． +
| 9 |
| 17 |
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 23 |
=2×
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 23 |
=
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 2 |
| 23 |
（3）（
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 3 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 3 |
| 5 |
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 17 |
| 18 |
=
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 5 |
| 6 |
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 3 |
| 5 |
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 17 |
| 18 |
=
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 25 |
| 18 |
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 17 |
| 18 |
=
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 4 |
| 9 |
（4）（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 5 |
| 13 |
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 12 |
| 13 |
=（
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 4 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 12 |
| 13 |
=
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 5 |
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 5 |
| 13 |
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 12 |
| 13 |
=
| 1 |
| 13 |
| 12 |
| 13 |
=1．
| 1 |
| 13 |
| 12 |
| 13 |
=1． +
| 12 |
| 13 |
=1．
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