题目内容

5
7
-
2
7
=
2
5
+
1
5
=
3
6
+
2
6
=		1-
7
9
=
7
8
-
4
8
=
2
4
+
2
4
=
4
9
+
1
9
=
2
3
+
1
3
=
5
7
-
2
7
=
3
7
2
5
+
1
5
=
3
5
3
6
+
2
6
=
5
6
1-
7
9
=
2
9
7
8
-
4
8
=
3
8
2
4
+
2
4
=1
4
9
+
1
9
=
5
9
2
3
+
1
3
=1
练习册系列答案
相关题目
6-
1
5
=
3
8
÷
1
12
=
6
7
+
1
2
=
1
6
×
9
4
=		1-
11
15
=
8
9
×
3
4
=
4÷
3
4
=
4
5
×
5
4
=
1
2
-
1
3
=
直接写出得数
1-1÷7=		13×99=
1
4
+
1
12
=		60×25%=
1
5
-
1
6
=
(
3
5
+
1
3
)×15=		20÷0.1%=4.05-1.9=(
1
2
）2-(
1
3
）2=		24×
1
8
-
1
8
÷
1
8
=
直接写得数．
①
1
4
+
3
4
=		②
5
7
-
5
7
=
③1-
3
5
=		④2+
7
8
=
小小神算手．
（1）
（2）
9个
1
10
减4个
1
10
剩______个______，就是______．
脱式运算，能简便的要用简便方法计算．
4
5
-
11
15
+
3
10

1
4
+
1
3
+
1
4
+
2
3

1-
5
6
-
1
6
．
计算．
2
8
+
5
8
=
4
5
+
1
5
=
6
9
-
5
9
=
计算
1
3
+
1
3
=
4
5
-
1
5
=		1-
3
5
=
8
9
-
5
9
=
3
8
+
5
8
=

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