题目内容

△×6=1.8△=
0.3
0.3
．
分析：积÷一个因数=另一个因数，据此代入数据即可求解．
解答：解：因为△×6=1.8，
所以△=1.8÷6=0.3；
故答案为：0.3．
点评：此题主要考查因数和积之间的关系．
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2.3×6= 1.8+0.8= 1.6÷4=
9-1.26= 5×2.6= 3.5+0.01=
3.5×0.4= 2.5×0.4= 2.3×0.2= 2.1÷0.3=
7.1×0.4= 4.5÷0.15= 1-0.07= 0.42÷0.7=
12.4÷4= 2.5+1.5=  5.9×0.2= 0.48÷0.8=
0.25×1.3×4= 20÷0.01= 9÷0.01= 5.5÷1.1=
4.79+15.81= 0.3÷0.03= 0.2×0.1= 3.6+6.4=
0.56÷0.28= 1.2×0.3= 6.7-5.6= 7.25÷0.5=
4.2÷0.21= 4.3×0= 0.15÷0.5= 3.5×4=
5.32-5.3= 1.25×3.4×8= 9.6÷3.2= 3.6+2.4=
4.3-2.7+5.7= 7.2-5.6= 1.8÷0.9= 8.2×0.5=
5.6÷0.4= 8.5÷5= 5.6×0.5= 9.8÷0.2=
3.56×0.2= 3.4+1.5+4.6= 3.4×0.04= 6.12+3.48=
6÷0.12= 7.6÷4= 3.4×0.5= 5.2-3.2-1.8=
6-3.8= 7.5÷3= 3.5+5.4= 3×2.5=
3.5+6.5= 7-6.23= 8÷0.4= 0.25×2.5=
7.5÷0.5= 0.89-0.48= 3.5×0.8= 5.9-（3.2+0.9）=
直接写得数．
4÷3=
4
5
+
2
5
=
4
7
-
4
7
=		 4.5×99+4.5=
0.72÷0.6= 1.8×0.5= 3.1-1.82= 3.2×4÷3.2×4=
直接写出得数．
0.45÷0.5=		 3.6÷0.01=
0.12+0.8= 4.2÷0.7÷6=
1.8×0.5= 49×0.2=
10÷2.5= 2.4-0.8=
0.44÷2.2= 0.6×0.5=
1.25×8= 0.56÷8=
1-
2
9
-
4
9
=
1
3
1
3
12
11
-
1
11
=
1
1
          		 1.8÷0.9×0.5=
1
1
        
2-1.08=
0.92
0.92
 8.8÷0.4=
22
22
           		 （1.6+0.5）÷5=
0.42
0.42
   
43×0.01﹦
0.43
0.43
         		 3.72×0.2=
0.744
0.744
 0.7×8-0.5=
5.1
5.1
        
99+0.1﹦
99.1
99.1
      		 3.2-2=
1.2
1.2
              		 6×0.125×8=
6
6
1.9×4﹦
7.6
7.6
            		 8.8÷0.11=
80
80
       		 4×1.2×0.25=
1.2
1.2
       
0.125×80﹦
10
10
 1.8×40=
72
72
             		 2.5-3.6÷1.8=
0.5
0.5
   
8×5.1=
40.8
40.8
            		 12-0.05×4=
11.8
11.8
．

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