题目内容

2×3×6=

[    ]

A．10

B．12

C．24

 D．36
答案：D
解析：

连乘式题按从左到右的顺序计算.

因为2×3=6, 6×6=36, 所以2×3×6=36, 选D．


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；6是2和3的
倍数
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．
在○里填上“＞”“＜”或“=”．
4.75÷0.9○4.75 		0.98×1.01○1.01 7.48×0.5○7.48÷0.5 2.86×0.01 2.86÷0.01
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①6.81+6.81×99                       
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⑤2.08×（9.6÷2.4）÷4.8             
⑥68.1-77.7÷0.7×0.5．
先估一估，再计算．
1．O8÷1.8=		 12.24÷24= 7.2÷3.6=
0.72÷1.5= 0.6×8= 1.24×0.4=
1、
1
6
+
1
8
=
1
25
÷
1
100
=
1
3
÷
1
4
=
5
6
÷
1
6
=
4
5
-
3
5
=
1
6
÷
5
6
=		 5-
1
6
=
7
20
÷
1
4
=
1
6
+
1
5
=
3
5
×
1
6
=
1
2
×
4
5
=
1
6
×3=
1
2
×
2
5
=
1
4
-
1
5
=
5
8
-
1
4
=
9
10
-
9
20
=
2
3
÷
1
8
=
1
5
+
1
50
=
7
8
-
3
4
=
1
3
-
1
6
=
5
6
×
3
5
=
3
10
×135=
1
3
+
2
5
=
1
5
+
3
2
=
2
3
×
2
5
=
1
10
+
3
5
=
6
7
-
1
5
=
7
8
-
1
6
=
6
25
÷
1
5
=
9
80
-
1
10
=		 18×
5
9
=
1
7
÷
1
4
=
1
10
÷
2
15
=
7
60
÷
1
30
=
1
7
÷
5
7
=
1
5
+
1
6
=
2.4×20= 0.12×3= 0.45×2= 3×1.5=
1.2÷0.3= 1÷2= 4.8×100= 4÷0.2=
0.25×8= 0.89÷8.9= 17.8+2.2= 4.2×5=
0.8÷0.2= 5.79÷0.1= 0.35+0.65= 3.4-1.5=
8.9-0.9= 9.2-9.2= 3.6÷0.4= 0.7×11=
15.15÷15= 0.2×0.3= 1.34×4×2.5= 0.9÷4.5=

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