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口算

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科目:小学数学 来源: 题型:

(2008?金阊区)
口算
1
4
-
1
5
=
1
4
+0.75
=
1
4
-
1
8
)×4=
3.14×9=
0.1×0.99= 7.5÷0.25=
2
3
÷6=
1
7
÷7×
1
7
=

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科目:小学数学 来源: 题型:

口算.
30÷3=
14×5= 28×4= 2×600=
450÷5= 2400÷8= 4800÷6= 800÷4=
870-250= 0÷9= 563÷7≈ 297÷6≈

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科目:小学数学 来源: 题型:

口算
4
1
2
÷4=
3.14×9=
6-
1
6
=
9
8
-
8
9
)×72=
88%-79.2%= 1÷1%=
1
2
×5÷
1
2
=
2000×2.25%=

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科目:小学数学 来源: 题型:

口算
1
4
×
1
3
=
4
7
÷2
=
1
2
÷
1
2
=
10÷
5
6
=
2
3
×
3
4
=
9
10
÷
1
5
=
1
6
÷6
=
8
9
÷4
=
15×
4
5
=
15÷
1
3
=
3
4
×
2
9
=
2
3
÷
1
2
=
2
5
×
1
2
=
1
2
÷
1
4
=
1
2
×
1
4
=
4
5
÷
1
5
=
3
7
×14
=
1
4
÷
1
2
=
1
2
-
1
4
=
4
9
×
3
4
=
5
8
×
2
5
=
1
6
÷
2
3
=
1
2
+
1
4
=
3
5
÷1
=
7
15
×5
=
3
4
=
1
2
÷
1
4
=
3
5
=
3
4
×12
=
1
5
÷
2
3
=
7
9
×
3
7
=
1-
3
5
=
18×
5
6
=
7
5
=
1
3
+
1
6
=
1+
3
5
=
2
9
×
1
4
=
8
3
÷2
=
3
5
÷
2
5
=
5
9
÷3
=
5
6
×
3
10
=
2
5
÷
1
2
=
1
4
=
3
4
=
30×
1
3
=
4
5
÷2
=
5
24
÷
5
6
=
5
8
×
1
2
×0
=
1
3
×
3
11
=
1
4
=
9
10
÷
3
5
=
1
3
÷
1
2
=
9
11
=
2
5
÷
1
5
=
1
3
÷
1
3
=
2
9
÷
1
2
=
5
6
×
6
5
=
1
5
÷
1
3
=
5
12
=
1
2
÷
1
2
=

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