题目内容

口算．
2
3
×
9
10
=6÷
1
3
=
8×3.14=
5
2
÷
7
3
=
122=75×4×2.5%=
分析：根据小数分数乘法、除法的计算法则，直接进行口算即可．
解答：解：口算．
2
3
×
9
10
=
3
5
          6÷
1
3
=18
8×3.14=25.12    
5
2
÷
7
3
=
15
14

122=144           75×4×2.5%=7.5
点评：此题考查的目的是理解掌握小数、分数乘法、除法的计算法则，并且能够正确熟练地进行口算，提高口算能力．
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（2012?石渠县模拟）口算．4+
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．
口算：
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39÷13 3÷0.01
3
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+
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5
2
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+
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口算
1
3
×0=
1
4
÷
2
5
=
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6
÷
1
12
=
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12
×
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14
=
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3
×
9
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1
6
=
4
11
×
11
4
=

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