题目内容
脱式计算
÷(
÷
-1)
7.5×24+22÷0.4.
| 5 |
| 8 |
| 3 |
| 5 |
| 4 |
| 15 |
7.5×24+22÷0.4.
①
÷(
÷
-1),
=
÷(
×
-1),
=
÷
,
=
×
,
=
;
②7.5×24+22÷0.4,
=(7.5×2)×12+22÷
,
=15×12+22×
,
=180+55,
=235.
| 5 |
| 8 |
| 3 |
| 5 |
| 4 |
| 15 |
=
| 5 |
| 8 |
| 3 |
| 5 |
| 15 |
| 4 |
=
| 5 |
| 8 |
| 5 |
| 4 |
=
| 5 |
| 8 |
| 4 |
| 5 |
=
| 1 |
| 2 |
②7.5×24+22÷0.4,
=(7.5×2)×12+22÷
| 2 |
| 5 |
=15×12+22×
| 5 |
| 2 |
=180+55,
=235.
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