题目内容

125×16+2×2×3=
2012
2012
．
分析：先把16分解成8×2，再运用乘法结合律简算．
解答：解：125×16+2×2×3，
=125×8×2+2×2×3，
=1000×2+4×3，
=2000+12，
=2012．
故答案为：2012．
点评：完成本题要注意分析式中数据，运用合适的简便方法计算．
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（2012?华亭县模拟）
直接写得数
3+
3
4
-3+
3
4
=
0.1×30%=
2÷1%-2=
3
4
÷
3
8
=
0.32=
1÷
3
2
×
2
3
=		 0.125×16= 2.58+7.42= 0.042÷0.6= 6.4-4=
直接写出得数
0.1×30%=		 2÷1%-2= 0.32= 0.125×16=
2.58+7.42= 3+
3
4
-3+
3
4
=
3
4
÷
3
8
=		 1÷
3
2
×
2
3
=
3-
5
7
=		 0.42÷0.6=
口算题．
0.125×16=		 3-1.06= 0.6÷6= 16.8-7=
11-
2
3
=
1
5
-
1
6
=		 1.01×0.2×0.1= 0.45×0=
0÷125= 9
7
8
-9.875=		 2
1
3
-0=		 0.1+0.2×0.3=
1
6
+
1
6
÷
1
6
+
1
6
=
1
5
÷3+
4
5
×
1
3
=
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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