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(2009•和平区)脱式计算:(1)450÷15+35(2)(1112−16)÷118×13(3)[910−(14÷720)]÷45.
题目详情
(2009•和平区)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 |
▼优质解答
答案和解析
(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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