1
3
×
3
10
=
5
13
÷5
=
1-20%=
1
2
+
1
3
=
3
8
×
2
5
=
1-
3
5
=
1
3
÷
2
3
=
1÷
8
9
=
4
7
÷
5
14
=
1
4
×
5
9
×
4
5
=
(1+
1
5
)×
1
12
=
分析:分?jǐn)?shù)乘法,先約分,再把分子乘分子的積作分子,分母乘分母的積作分母;除以一個(gè)數(shù)(0除外),就等于乘這個(gè)數(shù)的倒數(shù);異分母分?jǐn)?shù)相加減,先化成同分母分?jǐn)?shù),再加減,據(jù)此解答即可.
解答:解:
1
3
×
3
10
=
1
10
5
13
÷5
=
1
13
1-20%=0.8
1
2
+
1
3
=
5
6
3
8
×
2
5
=
3
20
1-
3
5
=
2
5
1
3
÷
2
3
=
1
2
1÷
8
9
=
9
8
4
7
÷
5
14
=
8
5
1
4
×
5
9
×
4
5
=
1
9
(1+
1
5
)×
1
12
=
1
10
點(diǎn)評(píng):此題主要考查分?jǐn)?shù)四則運(yùn)算法則的靈活應(yīng)用,以及學(xué)生的口算能力.
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科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:閱讀理解

1.
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8
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24
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5
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1
4
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3
4
+0.75×5
7
10
+75%
(36)2
1
2
×6.6+7.5×6
3
5
(37)9.56×180-95.6×8
(38)4.8×37+47×6.3 (39)9.5×8.8+0.12×95 (40)
19
20
×21
(41)
7
30
×33
(42)
2
45
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1
46
(43)
2
45
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45
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7
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7
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2
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9
×
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9
÷
14
13
(59)
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20
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3
(60)
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11
×
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8
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8
×
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11
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×
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4
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2
×
1
4
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17
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3
7
÷(
2
3
+
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7
)]
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16
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4
5
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1
6
+
1
8
)×24
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650
650
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200
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50
50
×8=400
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300
300
=700
150
150
÷5=30
300-
200
200
=100
500
500
+500=1000
2000-
2000
2000
=0
300
300
÷6=50
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200
200
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科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:

3
10
+
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5
=
1
2
1
2
;
4
5
-
7
10
=
1
10
1
10
;
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6
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1
3
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1
2
1
1
2
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51.8
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4
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