题目内容
用递等式计算
| 0.8×(3.75-0.3)÷0.1 | (
|
|
(1)
÷(
-
),
=
÷
,
=
×
,
=
;
(2)0.8×(3.75-0.3)÷0.1,
=0.8×3.45÷0.1,
=2.76÷0.1,
=27.6;
(3)(
-
×
)÷
,
=(
-
)÷
,
=
÷
,
=
;
(4)
÷(
+
×
),
=
÷(
+
),
=
÷
,
=
.
| 3 |
| 7 |
| 7 |
| 10 |
| 1 |
| 6 |
=
| 3 |
| 7 |
| 16 |
| 30 |
=
| 3 |
| 7 |
| 30 |
| 16 |
=
| 45 |
| 56 |
(2)0.8×(3.75-0.3)÷0.1,
=0.8×3.45÷0.1,
=2.76÷0.1,
=27.6;
(3)(
| 2 |
| 3 |
| 5 |
| 3 |
| 3 |
| 8 |
| 7 |
| 16 |
=(
| 2 |
| 3 |
| 5 |
| 8 |
| 7 |
| 16 |
=
| 1 |
| 24 |
| 7 |
| 16 |
=
| 2 |
| 21 |
(4)
| 17 |
| 19 |
| 1 |
| 4 |
| 2 |
| 7 |
| 7 |
| 8 |
=
| 17 |
| 19 |
| 1 |
| 4 |
| 1 |
| 4 |
=
| 17 |
| 19 |
| 1 |
| 2 |
=
| 34 |
| 19 |
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