题目内容
| 脱式计算(能简算的要简算) ①l+O.64÷0.8-0.15 | ②
| ||||||||||||
③
| ④
|
①l+O.64÷0.8-0.15,
=1+0.8-0.15,
=1.8-0.15,
=1.65;
②
×[
-(
-
)],
=
×[
-
],
=
×
,
=
;
③
×18+32×
,
=
×(18+32),
=
×50,
=20;
④
÷[(
+
)×
],
=
÷[
×
],
=
×15,
=3.
=1+0.8-0.15,
=1.8-0.15,
=1.65;
②
| 2 |
| 11 |
| 3 |
| 4 |
| 7 |
| 16 |
| 3 |
| 8 |
=
| 2 |
| 11 |
| 3 |
| 4 |
| 1 |
| 16 |
=
| 2 |
| 11 |
| 11 |
| 16 |
=
| 1 |
| 8 |
③
| 2 |
| 5 |
| 2 |
| 5 |
=
| 2 |
| 5 |
=
| 2 |
| 5 |
=20;
④
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 13 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
=3.
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