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用递等式计算,能简算的要简算.45+1115+31060.62-(9.2+12.62)6.8+16+3.2+561511-37-47911+56+211-1678-(710-18)
题目详情
用递等式计算,能简算的要简算.
| 60.62-(9.2+12.62) | ||||||||||||||
6.8+
|
| ||||||||||||||
|
|
▼优质解答
答案和解析
(1)
+
+
,
=
+
,
=1
;
(2)60.62-(9.2+12.62),
=60.62-9.2-12.62,
=48-9.2,
=38.8;
(3)6.8+
+3.2+
,
=(6.8+3.2)+(
+
),
=10+1,
=11;
(4)
-
-
,
=
-(
+
),
=
-1,
=
;
(5)
+
+
-
,
=(
+
)+(
-
),
=1+
,
=1
;
(6)
-(
-
),
=
4 |
5 |
11 |
15 |
3 |
10 |
=
23 |
15 |
3 |
10 |
=1
5 |
6 |
(2)60.62-(9.2+12.62),
=60.62-9.2-12.62,
=48-9.2,
=38.8;
(3)6.8+
1 |
6 |
5 |
6 |
=(6.8+3.2)+(
1 |
6 |
5 |
6 |
=10+1,
=11;
(4)
15 |
11 |
3 |
7 |
4 |
7 |
=
15 |
11 |
3 |
7 |
4 |
7 |
=
15 |
11 |
=
4 |
11 |
(5)
9 |
11 |
5 |
6 |
2 |
11 |
1 |
6 |
=(
9 |
11 |
2 |
11 |
5 |
6 |
1 |
6 |
=1+
2 |
3 |
=1
2 |
3 |
(6)
7 |
8 |
7 |
10 |
1 |
8 |
=
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