题目内容
用递等式计算.
①
÷
-
×
②7.2÷[(3.01-2.86)×0.24]
③346×25÷17÷
④1.25×63×32÷9.
①
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 12 |
| 4 |
| 35 |
②7.2÷[(3.01-2.86)×0.24]
③346×25÷17÷
| 1 |
| 34 |
④1.25×63×32÷9.
①
÷
-
×
,
=
-
,
=
;
②7.2÷[(3.01-2.86)×0.24],
=7.2÷[0.15×0.24],
=7.2÷0.036,
=200;
③346×25÷17÷
,
=346×25×
×34,
=(346×25)×(
×34)
=8650×2,
=17300;
④1.25×63×32÷9,
=(1.25×32)×(63÷9),
=(1.25×8×4)×7,
=(10×4)×7,
=40×7,
=280.
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 12 |
| 4 |
| 35 |
=
| 9 |
| 10 |
| 1 |
| 15 |
=
| 5 |
| 6 |
②7.2÷[(3.01-2.86)×0.24],
=7.2÷[0.15×0.24],
=7.2÷0.036,
=200;
③346×25÷17÷
| 1 |
| 34 |
=346×25×
| 1 |
| 17 |
=(346×25)×(
| 1 |
| 17 |
=8650×2,
=17300;
④1.25×63×32÷9,
=(1.25×32)×(63÷9),
=(1.25×8×4)×7,
=(10×4)×7,
=40×7,
=280.
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