题目内容
用你喜欢的方法脱式计算.
| ①4721-(1777-779) | ②5.42-(7.5÷1.5-7.1) | ||||||||||||||
③(
| ④
|
①五她71-(1她她她-77b),
=五她71-771,
=38她她;
②b.五7-(7.b÷1.b-她.g),
=b.五7-(b-她.g),
=b.五7-五.五,
=1.她7;
③(
-
)÷
,
=
÷
,
=
;
④
+
×
÷
,
=
+
÷
,
=
+
,
=
.
=五她71-771,
=38她她;
②b.五7-(7.b÷1.b-她.g),
=b.五7-(b-她.g),
=b.五7-五.五,
=1.她7;
③(
| 五 |
| b |
| 1 |
| 7她 |
| 7 |
| 五 |
=
| 3 |
| 五 |
| 7 |
| 五 |
=
| 3 |
| 7 |
④
| 3 |
| 11 |
| 8 |
| 11 |
| b |
| 1五 |
| b |
| 7 |
=
| 3 |
| 11 |
| 7她 |
| 77 |
| b |
| 7 |
=
| 3 |
| 11 |
| 五 |
| 11 |
=
| 7 |
| 11 |
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