题目内容

7×5
5
14
=
5
8
÷
2
3
=
1
6
+
2
5
=
2
3
×
3
4
=		 1+
1
2
-0.4=
1
4
+0.75=
1
3
+
2
9
=
6
7
÷9=
1
4
+
1
2
=
5
6
×0.4=		 4÷
8
9
=
1
9
×
1
9
=
（2+
2
5
）×（1+
1
4
）=
2
3
×9=
6
9
+
1
6
=
4÷
1
3
=
1
2
+1
1
3
=		 5-（2+
3
8
）=
4.5÷
1
4
=		 39×
4
13
=		 11×（10+
1
11
）=
11+（3+
2
3
）=
3
5
×
5
6
=		 8×
3
4
=
12-（6+
3
4
）=		 1÷（1+
3
4
）=		 20÷20%=
1÷0.01= 1.12= 9.9÷（1+
4
5
）=
81÷
5
9
=		 1.65-0÷1.65=
2
3
×
4
9
×
1
2
=
5-1.4-1.6= （0.18+0.9）÷9= 8×
3
10
×1.25=
1.25×0.16×8=
5
8
+7.3÷10%=
5
8
+9-0.2=
5.08-0.74-1.26=
1
4
×0.2=		 1-.0375÷
5
8
=
8÷0.5+
1
4
×（1+
1
4
）=		 （
1
12
+
5
6
）×24=		 10（3+
1
7
）÷（3+
1
7
）=
（3+
1
2
+5+
1
3
+2+
1
2
）-（5+
1
3
）=
2
5
+
1
5
÷
2
5
+
1
5
=		 1-
3
10
-
2
5
=
3-（2+
4
9
）+（2+
4
9
）=
3
8
-
3
8
÷3=		 0×（3+
2
9
）+（1+
2
5
）=
1
6
+
1
7
-
1
6
+
1
7
=		 0.125×64×0.125=
5
4
×8+8×
1
4
=
3
8
+
3
4
×16=
5
9
-
5
6
+
4
9
=
分析：根据整数、分数、小数的加减乘除法的计算法则进行解答即可．
解答：
解：7×5
5
14
=37
1
2
5
8
÷
2
3
=
15
16
1
6
+
2
5
=
17
30
2
3
×
3
4
=
1
2
 1+
1
2
-0.4=0.1
1
4
+0.75=1
1
3
+
2
9
=
5
9
6
7
÷9=
2
21
1
4
+
1
2
=
3
4
5
6
×0.4=
1
3
 4÷
8
9
=
9
2
1
9
×
1
9
=
1
81
（2+
2
5
）×（1+
1
4
）=3
2
3
×9=6
6
9
+
1
6
=
5
6
4÷
1
3
=12
1
2
+1
1
3
=1
5
6
 5-（2+
3
8
）=2
5
8
4.5÷
1
4
=18		 39×
4
13
=12		 11×（10+
1
11
）=111
11+（3+
2
3
）14
2
3
=
3
5
×
5
6
=
1
2
 8×
3
4
=6
12-（6+
3
4
）=5
1
4
 1÷（1+
3
4
）=
4
7
 20÷20%=100
1÷0.01=100 1.12=1.21 9.9÷（1+
4
5
）=5.5
81÷
5
9
=
729
5
 1.65-0÷1.65=1.65
2
3
×
4
9
×
1
2
=
4
27
5-1.4-1.6=2 （0.18+0.9）÷9=0.12 8×
3
10
×1.25=3
1.25×0.16×8=1.6
5
8
+7.3÷10%=1.155
5
8
+9-0.2=9.425
5.08-0.74-1.26=3.08
1
4
×0.2=
1
20
 1-0.375÷
5
8
=0
8÷0.5+
1
4
×（1+
1
4
）=16
5
16
 （
1
12
+
5
6
）×24=22		 10（3+
1
7
）÷（3+
1
7
）=10
（3+
1
2
+5+
1
3
+2+
1
2
）-（5+
1
3
）=6
2
5
+
1
5
÷
2
5
+
1
5
=
11
10
 1-
3
10
-
2
5
=
1
2
3-（2+
4
9
）+（2+
4
9
）=3
3
8
-
3
8
÷3=
1
4
 0×（3+
2
9
）+（1+
2
5
）=1
2
5
1
6
+
1
7
-
1
6
+
1
7
=
2
7
 0.125×64×0.125=1
5
4
×8+8×
1
4
=12
3
8
+
3
4
×16=12
3
8
5
9
-
5
6
+
4
9
=
1
6
点评：考查了整数、分数、小数的加减乘除法的口算能力，注意认真计算即可．
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