题目内容
递等式计算(能简算的要简算).
(1)168.1÷(4.3×2-0.4)
(2)(
+
)÷
+
(3)
×
+
÷
.
(1)168.1÷(4.3×2-0.4)
(2)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
(3)
| 5 |
| 7 |
| 1 |
| 7 |
| 5 |
| 7 |
| 7 |
| 5 |
(1)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)(
+
)÷
+
,
=
×
+
,
=
+
,
=
;
(3)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=
×
,
=
.
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 3 |
| 7 |
| 7 |
| 10 |
=
| 9 |
| 20 |
| 7 |
| 10 |
=
| 23 |
| 20 |
(3)
| 5 |
| 7 |
| 1 |
| 7 |
| 5 |
| 7 |
| 7 |
| 5 |
=
| 5 |
| 7 |
| 1 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
=(
| 1 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
=
| 6 |
| 7 |
| 5 |
| 7 |
=
| 30 |
| 49 |
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