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计算下面各题,能简算的要简算,并写出主要的计算过程.①7.8-8.75+2.2-1.25②13.2÷(9.4-5)+5.32③7-37-47④1317-(517+110)⑤15+(56-1318)
题目详情
计算下面各题,能简算的要简算,并写出主要的计算过程.
①7.8-8.75+2.2-1.25
②13.2÷(9.4-5)+5.32
③7-
-
④
-(
+
)
⑤
+(
-
)
-
④
-(
+
)
⑤
+(
-
)
3 3 7 7
④
-(
+
)
⑤
+(
-
)
4 4 7 7
-(
+
)
⑤
+(
-
)
13 13 17 17
+
)
⑤
+(
-
)
5 5 17 17
)
⑤
+(
-
)
1 1 10 10
+(
-
)
1 1 5 5
-
)
5 5 6 6
)
13 13 18 18
①7.8-8.75+2.2-1.25
②13.2÷(9.4-5)+5.32
③7-
3 |
7 |
4 |
7 |
④
13 |
17 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
3 |
7 |
4 |
7 |
④
13 |
17 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
3 |
7 |
4 |
7 |
④
13 |
17 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
4 |
7 |
13 |
17 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
13 |
17 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
5 |
17 |
1 |
10 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
1 |
10 |
1 |
5 |
5 |
6 |
13 |
18 |
1 |
5 |
5 |
6 |
13 |
18 |
5 |
6 |
13 |
18 |
13 |
18 |
▼优质解答
答案和解析
①7.8-8.75+2.2-1.25
=(7.8+2.2)-(8.75+1.25)
=10-10
=0
②13.2÷(9.4-5)+5.32
=13.2÷4.4+5.32
=3+5.32
=8.32
③7-
-
=7-(
+
)
=7-1
=6
④
-(
+
)
=
-
-
=
-
=
⑤
+(
-
)
=
+(
-
)
=
+
=
3 3 37 7 7-
=7-(
+
)
=7-1
=6
④
-(
+
)
=
-
-
=
-
=
⑤
+(
-
)
=
+(
-
)
=
+
=
4 4 47 7 7
=7-(
+
)
=7-1
=6
④
-(
+
)
=
-
-
=
-
=
⑤
+(
-
)
=
+(
-
)
=
+
=
3 3 37 7 7+
)
=7-1
=6
④
-(
+
)
=
-
-
=
-
=
⑤
+(
-
)
=
+(
-
)
=
+
=
4 4 47 7 7)
=7-1
=6
④
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+
)
=
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⑤
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=
+(
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13 13 1317 17 17-(
+
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5 5 517 17 17+
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1 1 110 10 10)
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13 13 1317 17 17-
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5 5 517 17 17-
=
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1 1 110 10 10
=
-
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⑤
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=
8 8 817 17 17-
=
⑤
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-
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=
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1 1 110 10 10
=
⑤
+(
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+(
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=
+
=
63 63 63170 170 170
⑤
+(
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=
+(
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=
+
=
1 1 15 5 5+(
-
)
=
+(
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5 5 56 6 6-
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=
+(
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13 13 1318 18 18)
=
+(
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1 1 15 5 5+(
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=
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15 15 1518 18 18-
)
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13 13 1318 18 18)
=
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1 1 15 5 5+
=
1 1 19 9 9
=
14 14 1445 45 45
=(7.8+2.2)-(8.75+1.25)
=10-10
=0
②13.2÷(9.4-5)+5.32
=13.2÷4.4+5.32
=3+5.32
=8.32
③7-
3 |
7 |
4 |
7 |
=7-(
3 |
7 |
4 |
7 |
=7-1
=6
④
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
3 |
7 |
4 |
7 |
=7-(
3 |
7 |
4 |
7 |
=7-1
=6
④
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
4 |
7 |
=7-(
3 |
7 |
4 |
7 |
=7-1
=6
④
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
3 |
7 |
4 |
7 |
=7-1
=6
④
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
4 |
7 |
=7-1
=6
④
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
13 |
17 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
5 |
17 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
10 |
=
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
13 |
17 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
5 |
17 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
10 |
=
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
8 |
17 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
10 |
=
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
63 |
170 |
⑤
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
5 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
5 |
6 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
13 |
18 |
=
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
5 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
15 |
18 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
13 |
18 |
=
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
5 |
1 |
9 |
=
14 |
45 |
1 |
9 |
=
14 |
45 |
14 |
45 |
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