题目内容
脱式计算:
(1)450÷15+35
(2)(
-
)÷
×
(3)[
-(
÷
)]÷
.
(1)450÷15+35
(2)(
| 11 |
| 12 |
| 1 |
| 6 |
| 1 |
| 18 |
| 1 |
| 3 |
(3)[
| 9 |
| 10 |
| 1 |
| 4 |
| 7 |
| 20 |
| 4 |
| 5 |
(1)450÷15+35,
=30+35,
=65;
(2)(
-
)÷
×
,
=
÷
×
,
=
×
,
=
;
(3)[
-(
÷
)]÷
,
=[
-
]÷
,
=
×
,
=
.
=30+35,
=65;
(2)(
| 11 |
| 12 |
| 1 |
| 6 |
| 1 |
| 18 |
| 1 |
| 3 |
=
| 9 |
| 12 |
| 1 |
| 18 |
| 1 |
| 3 |
=
| 27 |
| 2 |
| 1 |
| 3 |
=
| 9 |
| 2 |
(3)[
| 9 |
| 10 |
| 1 |
| 4 |
| 7 |
| 20 |
| 4 |
| 5 |
=[
| 9 |
| 10 |
| 5 |
| 7 |
| 4 |
| 5 |
=
| 13 |
| 70 |
| 5 |
| 4 |
=
| 13 |
| 56 |
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