题目内容
脱式计算.
÷
-
×
85×25+85×85-10×85
13.8-
+6.2-
.
| 1 |
| 2 |
| 2 |
| 5 |
| 2 |
| 3 |
| 7 |
| 10 |
85×25+85×85-10×85
13.8-
| 7 |
| 9 |
| 11 |
| 9 |
(1)
÷
-
×
=
-
.
=
;
(2)85×25+85×85-10×85
=(25+85-10)×85,
=100×85,
=8500;
(3)13.8-
+6.2-
=(13.8+6.2)-(
+
),
=20-2,
=18.
| 1 |
| 2 |
| 2 |
| 5 |
| 2 |
| 3 |
| 7 |
| 10 |
=
| 5 |
| 4 |
| 7 |
| 15 |
=
| 47 |
| 60 |
(2)85×25+85×85-10×85
=(25+85-10)×85,
=100×85,
=8500;
(3)13.8-
| 7 |
| 9 |
| 11 |
| 9 |
=(13.8+6.2)-(
| 7 |
| 9 |
| 11 |
| 9 |
=20-2,
=18.
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