题目内容
用递等式计算,能简算的要简算.
1÷﹙18.5-4.5×3﹚
÷
-
×
×
×40.
1÷﹙18.5-4.5×3﹚
| 6 |
| 7 |
| 3 |
| 14 |
| 6 |
| 5 |
| 2 |
| 3 |
| 2 |
| 5 |
| 3 |
| 8 |
(1)1÷﹙18.5-4.5×3﹚,
=1÷﹙18.5-13.5﹚,
=1÷5,
=0.1;
(2)
÷
-
×
,
=4-
,
=3
;
(3)
×
×40,
=
×40,
=6.
=1÷﹙18.5-13.5﹚,
=1÷5,
=0.1;
(2)
| 6 |
| 7 |
| 3 |
| 14 |
| 6 |
| 5 |
| 2 |
| 3 |
=4-
| 4 |
| 5 |
=3
| 1 |
| 5 |
(3)
| 2 |
| 5 |
| 3 |
| 8 |
=
| 6 |
| 40 |
=6.
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