题目内容
简算.
23-
-
1.8×
+2.2×25%44×(
-
)
23-
| 12 |
| 17 |
| 5 |
| 17 |
| 1 |
| 4 |
| 5 |
| 11 |
| 1 |
| 4 |
(1)23-
-
,
=23-(
+
),
=23-1,
=22;
(2)1.8×
+2.2×25%,
=1.8×0.25+2.2×0.25,
=0.25×(1.8+2.2),
=0.25×4,
=1;
(3)44×(
-
),
=44×
-44×
,
=20-11,
=9.
| 12 |
| 17 |
| 5 |
| 17 |
=23-(
| 12 |
| 17 |
| 5 |
| 17 |
=23-1,
=22;
(2)1.8×
| 1 |
| 4 |
=1.8×0.25+2.2×0.25,
=0.25×(1.8+2.2),
=0.25×4,
=1;
(3)44×(
| 5 |
| 11 |
| 1 |
| 4 |
=44×
| 5 |
| 11 |
| 1 |
| 4 |
=20-11,
=9.
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