题目内容
脱式计算.
(1)8.25-2.43-3.57
(2)3.6÷(7.2-4×1.5)
(3)
+
×
(4)
÷[
×(
-
)].
(1)8.25-2.43-3.57
(2)3.6÷(7.2-4×1.5)
(3)
| 2 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
(4)
| 3 |
| 8 |
| 3 |
| 5 |
| 3 |
| 4 |
| 1 |
| 4 |
(1)8.25-2.43-3.57,
=8.25-(2.43+3.57),
=8.25-6,
=2.25;
(2)3.6÷(7.2-4×1.5),
=3.6÷(7.2-6),
=3.6÷1.2,
=3;
(3)
| 2 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
=
| 2 |
| 9 |
| 1 |
| 3 |
=
| 5 |
| 9 |
(4)
| 3 |
| 8 |
| 3 |
| 5 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 3 |
| 8 |
| 3 |
| 5 |
| 1 |
| 2 |
=
| 3 |
| 8 |
| 3 |
| 10 |
=
| 5 |
| 4 |
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