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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
|
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▼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 |
=
| 1 |
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| 5 |
| 13 |
=
| 1 |
| 3 |
| 1 |
| 3 |
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