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用递等式计算(能简算的请简算)①7.6-4.8+8.4-5.2②4×0.8×2.5×1.25③79×1314+29÷1413④1375-375÷15×18⑤1.05×(3.8-0.8)÷6.3⑥65×〔(76-49)÷135〕
题目详情
用递等式计算(能简算的请简算)
①7.6-4.8+8.4-5.2 ②4×0.8×2.5×1.25 ③
×
+
÷
①7.6-4.8+8.4-5.2 ②4×0.8×2.5×1.25 ③
×
+
÷
×
+
÷
7 7 9 9
+
÷
13 13 14 14
÷
2 2 9 9
14 14 13 13 ④1375-375÷15×18 ⑤1.05×(3.8-0.8)÷6.3 ⑥
×〔(
-
)÷
〕 ④1375-375÷15×18 ⑤1.05×(3.8-0.8)÷6.3 ⑥
×〔(
-
)÷
〕
×〔(
-
)÷
〕
6 6 5 5
-
)÷
〕
7 7 6 6
)÷
〕
4 4 9 9
〕
13 13 5 5
①7.6-4.8+8.4-5.2 | ②4×0.8×2.5×1.25 | ③
| ||||||||
④1375-375÷15×18 | ⑤1.05×(3.8-0.8)÷6.3 | ⑥
|
①7.6-4.8+8.4-5.2 | ②4×0.8×2.5×1.25 | ③
| ||||||||
④1375-375÷15×18 | ⑤1.05×(3.8-0.8)÷6.3 | ⑥
|
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
13 |
14 |
2 |
9 |
14 |
13 |
2 |
9 |
14 |
13 |
14 |
13 |
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
4 |
9 |
13 |
5 |
13 |
5 |
▼优质解答
答案和解析
①7.6-4.8+8.4-5.2,
=(7.6+8.4)-(4.8+5.2),
=16-10,
=6;
②4×0.8×2.5×1.25,
=(4×2.5)×(0.8×1.25),
=10×1,
=10;
③
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
7 7 79 9 9×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
2 2 29 9 9÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
14 14 1413 13 13,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
7 7 79 9 9×
+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14+
×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
2 2 29 9 9×
,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14,
=(
+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
7 7 79 9 9+
)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
2 2 29 9 9)×
,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14,
=1×
,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14,
=
;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 1314 14 14;
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
6 6 65 5 5×[(
-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
7 7 76 6 6-
)÷
],
=
×[
÷
],
=
×
×
,
=
.
4 4 49 9 9)÷
],
=
×[
÷
],
=
×
×
,
=
.
13 13 135 5 5],
=
×[
÷
],
=
×
×
,
=
.
6 6 65 5 5×[
÷
],
=
×
×
,
=
.
39 39 3954 54 54÷
],
=
×
×
,
=
.
13 13 135 5 5],
=
×
×
,
=
.
6 6 65 5 5×
×
,
=
.
39 39 3954 54 54×
,
=
.
5 5 513 13 13,
=
.
1 1 13 3 3.
=(7.6+8.4)-(4.8+5.2),
=16-10,
=6;
②4×0.8×2.5×1.25,
=(4×2.5)×(0.8×1.25),
=10×1,
=10;
③
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
=
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
7 |
9 |
13 |
14 |
2 |
9 |
14 |
13 |
=
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
2 |
9 |
14 |
13 |
=
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
2 |
9 |
14 |
13 |
=
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
14 |
13 |
=
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
7 |
9 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
2 |
9 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
=(
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
7 |
9 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
2 |
9 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
=1×
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
=
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
14 |
④1375-375÷15×18,
=1375-25×18,
=1375-450,
=925;
⑤1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
⑥
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
6 |
5 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
7 |
6 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
4 |
9 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
5 |
=
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
6 |
5 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
39 |
54 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
13 |
5 |
=
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
6 |
5 |
39 |
54 |
5 |
13 |
=
1 |
3 |
39 |
54 |
5 |
13 |
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3 |
5 |
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1 |
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