题目内容
| 脱式计算{能简算的要简算} 51÷(7.7-2.48-2.22) |
|
|
(1)51÷(7.7-2.48-2.22)
=51÷[7.7-(2.48+2.22)]
=51÷[7.7-4.7]
=51÷3
=17;
(2)
×54+
×46
=
×(54+46)
=
×100
=
;
(3)
×
+(1-
)
=
+
=
.
=51÷[7.7-(2.48+2.22)]
=51÷[7.7-4.7]
=51÷3
=17;
(2)
| 3 |
| 8 |
| 3 |
| 8 |
=
| 3 |
| 8 |
=
| 3 |
| 8 |
=
| 75 |
| 2 |
(3)
| 14 |
| 15 |
| 3 |
| 7 |
| 47 |
| 60 |
=
| 2 |
| 5 |
| 13 |
| 60 |
=
| 37 |
| 60 |
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