题目内容
用你喜欢的方法计算
(1)275-450÷18
(2)
-
+
-
(3)
÷6+1÷6×
(4)
×
÷(
-
).
(1)275-450÷18
(2)
| 3 |
| 4 |
| 2 |
| 7 |
| 1 |
| 4 |
| 5 |
| 7 |
(3)
| 9 |
| 25 |
| 6 |
| 25 |
(4)
| 1 |
| 6 |
| 2 |
| 3 |
| 4 |
| 5 |
| 8 |
| 15 |
(1)275-450÷18,
=275-25,
=250;
(2)
-
+
-
,
=(
+
)-(
+
),
=1-1,
=0;
(3)
÷6+1÷6×
,
=(
+
)×
,
=
×
,
=
;
(4)
×
÷(
-
),
=
×
÷
,
=
÷
,
=
.
=275-25,
=250;
(2)
| 3 |
| 4 |
| 2 |
| 7 |
| 1 |
| 4 |
| 5 |
| 7 |
=(
| 3 |
| 4 |
| 1 |
| 4 |
| 2 |
| 7 |
| 5 |
| 7 |
=1-1,
=0;
(3)
| 9 |
| 25 |
| 6 |
| 25 |
=(
| 9 |
| 25 |
| 6 |
| 25 |
| 1 |
| 6 |
=
| 3 |
| 5 |
| 1 |
| 6 |
=
| 1 |
| 10 |
(4)
| 1 |
| 6 |
| 2 |
| 3 |
| 4 |
| 5 |
| 8 |
| 15 |
=
| 1 |
| 6 |
| 2 |
| 3 |
| 4 |
| 15 |
=
| 1 |
| 9 |
| 4 |
| 15 |
=
| 5 |
| 12 |
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