题目内容

h
6
-
4
9
=
c
9
______．（判断正误）
5
6
-
4
9

=
四5
四8
-
8
四8

=
f
四8
．
故答案为：×．
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直接写出得数．
4
12
-
5
12
=		12÷
2
4
=		1-
4
4
=
4
9
÷
8
9
=
5
4
×
4
10
=		4.4-1.4=1.25×4.2×8=22×
4
2
=
5.4×50×2=2.5×2×1.2=
直接写出得数
18×
5
9
=		500×0.3=4÷20%=
2
3
-
2
5
=		6.5-1.45=
15÷
3
5
=		1-39%=
1
4
+
1
6
=
5
7
×9÷
5
7
×
1
9
=		50×（1+50%）=
7
5
12
-(3
4
5
+2
1
12
)．
计算[
手
56
+
5
7
]．
涂一涂，填一填．

着
3
+
1
4
=
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(&nb他p;&nb他p;&nb他p;)
+
(&nb他p;&nb他p;&nb他p;)
(&nb他p;&nb他p;&nb他p;)
+
(&nb他p;&nb他p;&nb他p;)
(&nb他p;&nb他p;&nb他p;)
．
3
4
×2=
1
6
+
1
2
=
5
9
÷5=
1
12
×
6
7
=
3
4
÷3=
5
4
×
5
4
=
5
8
÷1=		5-
2
3
=
3
9
×12=
3
5
×
5
12
=		4-
2
3
=
7
12
×3=
2
7
÷14=		8+
3
5
=		0×
13
30
=		39×
3
13
=
8×
1
2
=
5
6
÷
3
4
=		4×
12
7
=		20÷
4
5
=
1-
9
10
=		2.5×16=
5
12
÷
1
6
=
3
2
×
4
5
=
8
15
÷24=		11÷
22
8
=
1
2
÷
3
8
=
4
7
÷
2
3
=
3
4
+
1
7
=		1.5÷0.05=0×
1
9
×9=		1.5÷0.05=
5
8
÷
7
12
=
4
5
×
2
3
×
5
6
=
5
9
×
2
5
=		2.5×0.4=
14×
5
16
=		(
1
2
+
1
3
)×12=
14
33
×
3
7
=		0×
7
9
=
5
8
×
5
8
=
5
21
+
4
7
=
7
9
÷7=		2-
1
4
=
3
5
-
1
8
=
4
21
÷
8
7
=
2
3
-
1
4
=		6.25+1.75=
1
2
÷
7
18
=
9
10
×6=
1
8
+
1
9
=
3
4
÷
4
3
=
1
2
×
2
3
=		12-
5
7
=		1÷
2
5
=
2
9
÷18=
7
28
÷
2
9
=		10×1×
2
5
=		20÷
4
5
=
1
3
×9+9×
2
3
=
42÷
21
23
=
3
8
÷12=
比
5
8
多
2
8
的数是______，比1少
2
5
的数是______．
一根木料长
4
5
米，若用去
1
2
米，还剩______米．若用去
1
2
，还剩______米．

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