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口算练习题一(第一周) 口算练习题一(第二周)
: .
- =
-
=
X 100=
X 8=
1 乂 1 =
2 x 3 =
12
x 2
1
+ 3=
2 2
3
4
3
4
1
1
4 5
+ 5 =
— 35
6 '
%
5 X8 =
3
— 1-=
3
X ?
4
+ 2
-=
5
2
5
7
3
.5X =
3 _
-3=
36
X
1 _
1 . 2 =
—-——=
8
2
2 5
18X700=
400
-80 =
64
宁4 =
360
-20 =
1 + 5 =
8亠
4=
3
—=
7
3 =
7
9
8
4
- 41 =
10 -
20=
24
-15=
X 10=
9
45+ —宁 9=
1 —
4 _
.4
3
1 1
X - —3X -=
10
5
5
3
3
10 — =
+5=
4
1
=7
十
=
3
§ +电=
2 X
2 _
8亠
•
8=
丄+〕
8 8
5
3
11
4 3
- =
「 X 4=
X =
=
-=
2 . 3 =
—-——=
-X 27=
26
X -=
-X 2=
3 2
3
2
7
2 . 2 =
—-——=
1亠
.
1 =
2 X 2=
_5
X 13=
3 3
4
3
13
26
4 小
4
7 =
1
1 c
-X 3=
-X 8=
+ 3=
5
5
10 =
4
4
+=
—=
-4=
-13=
— 13 =
3 X
2 _
4 .
—-—-
2 =
- =
5
2
5
7
3
3 X 1 =
1
1 =
2 =
3 4
•
24 -
X -=
5 2
7
2
3
8 5
“ 1 /
6
7亠
7
1 —
‘ 1
12- = 1
-7 +
~~
1 X」=
2
7
12
4
3
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