题目内容

4÷
45
=4÷4×5
√
√
．
分析：4÷
4
5
根据分数除法的计算方法求解；4÷4×5按照从左到右的顺序计算；得出结果然后比较即可求解．
解答：解：4÷
4
5
=5；
4÷4×5，
=1×5，
=5．
5=5；
故答案为：√．
点评：本题主要考查了分数除法的计算方法：除以一个数等于乘这个数的倒数．
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直接写出得数．
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24
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2
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5
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25
16
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2
3
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5
12
=
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4
1
4
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8
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8
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9
  
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8
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8
5
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3
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1
4
=
1
12
1
12
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2
3
=
3
2
3
2
 5
1
8
+0.8=
5.925
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2
+
9
2
=
12
12
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7
15
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28
15
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1
2
=
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2
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3
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1
6
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9
1
9
7
8
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1
8
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8
5
2
5
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5
3
=
3
3
1
6
×
3
8
=
1
16
1
16
3
5
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1
2
=
1
10
1
10
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35.4
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100
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4
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5
8
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728+199= 637-201= 16×25=
1.6×[（12-7.2）÷（0.84÷2.1）]=
计算
1
2
-
2
5
=
 
 7+
5
6
=
 
1
5
+
3
5
=
 
 0.6÷3-0.2=
 
1.5×8=
 
    		 2-
2
3
=
 
1
5
+
1
4
=
 
  		0.6×0.9=
 
12.5÷5=
 
        		6-3.4=
 
        		4.5×0.2=
 
           		12÷0.6=
 
7.2+12.8=
 
     		0.02×0.5=
 
 3-
4
7
=
 
1
8
+
3
7
+
4
7
=
 
45×2=
 
             		5.6+3.8=
 
    		9.13+2.1=
 
  		9.13+2.5=
 
．

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