题目内容
计算下列各题.(能简算的要简算)
-
×
÷
×
+
×
×7.83-
×7.83
÷(
+
).
| 4 |
| 5 |
| 4 |
| 15 |
| 3 |
| 8 |
| 3 |
| 10 |
| 3 |
| 8 |
| 1 |
| 7 |
| 3 |
| 8 |
| 5 |
| 7 |
| 13 |
| 8 |
| 5 |
| 8 |
| 2 |
| 7 |
| 2 |
| 5 |
| 1 |
| 3 |
(1)
| 4 |
| 5 |
| 4 |
| 15 |
| 3 |
| 8 |
| 3 |
| 10 |
=
| 4 |
| 5 |
| 1 |
| 10 |
| 3 |
| 10 |
=
| 4 |
| 5 |
| 1 |
| 3 |
=
| 7 |
| 15 |
(2)
| 3 |
| 8 |
| 1 |
| 7 |
| 3 |
| 8 |
| 5 |
| 7 |
=
| 3 |
| 8 |
| 1 |
| 7 |
| 5 |
| 7 |
=
| 3 |
| 8 |
| 6 |
| 7 |
=
| 9 |
| 28 |
(3)
| 13 |
| 8 |
| 5 |
| 8 |
=(
| 13 |
| 8 |
| 5 |
| 8 |
=1×7.83,
=7.83;
(4)
| 2 |
| 7 |
| 2 |
| 5 |
| 1 |
| 3 |
=
| 2 |
| 7 |
| 11 |
| 15 |
=
| 30 |
| 77 |
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