题目内容

直接写出得数．
2
9
÷4=		 5×
3
10
=
4
5
×
3
8
=
1
3
÷6=
7
12
+
5
6
=
9
14
×
14
15
×
5
9
=
0÷
8
9
×
7
18
=
7
9
×
1
7
=		 17-
4
8
=
4
9
×9÷
4
9
×9=
分析：本题根据分数的加法，减法，乘法，除法的运算法则计算即可．
解答：
解：
2
9
÷4=
1
18
 5×
3
10
=
3
2
4
5
×
3
8
=
3
10
1
3
÷6=
1
18
7
12
+
5
6
=
17
12
9
14
×
14
15
×
5
9
=
1
3
0÷
8
9
×
7
18
=0
7
9
×
1
7
=
1
9
 17-
4
8
=16
1
2
4
9
×9÷
4
9
×9=81
点评：完成本题要细心分析式中数据，能简便计算的要简便计算．
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+
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9
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12
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直接写出得数．
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×6=		 0×
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直接写出得数．
2
9
×
3
5
=
3
4
×
1
2
×
4
9
=
1
5
÷3=		 12×
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13
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4
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4
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2
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3
8
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4
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5
×
2
3
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8
×
4
25
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10
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3
20
=

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