题目内容
列递等式计算
| 0.25×0.07×8 | 1÷[(
| 6.8×10.7-0.7×6.8. |
①
×(
-
),
=
×(
-
),
=
×
,
=
;
②0.25×0.07×8,
=(0.25×4)×2×0.07,
=2×0.07,
=0.14;
③1÷[(
+
)÷4],
=1÷[(
+
)÷4],
=1÷[
×
],
=1÷
,
=8;
④6.8×10.7-0.7×6.8,
=6.8×(10.7-0.7),
=6.8×10,
=68;
| 3 |
| 4 |
| 4 |
| 3 |
| 8 |
| 9 |
=
| 3 |
| 4 |
| 12 |
| 9 |
| 8 |
| 9 |
=
| 3 |
| 4 |
| 4 |
| 9 |
=
| 1 |
| 3 |
②0.25×0.07×8,
=(0.25×4)×2×0.07,
=2×0.07,
=0.14;
③1÷[(
| 1 |
| 6 |
| 1 |
| 3 |
=1÷[(
| 1 |
| 6 |
| 2 |
| 6 |
=1÷[
| 1 |
| 2 |
| 1 |
| 4 |
=1÷
| 1 |
| 8 |
=8;
④6.8×10.7-0.7×6.8,
=6.8×(10.7-0.7),
=6.8×10,
=68;
练习册系列答案
相关题目