文档介绍:97 + 258=
204 + 365=
+=
369- 204=
457-302=
-=
101X25 =
125X8 =
X9 =
50X12 =
12X70 =
=
360- 3 =
480-12 =
-3 =
300- 50 =
500-50 =
-
(2)
(4)
(6)
362 + 298=
450 + 250=
3 + =
363-199=
360-240=
-5 =
32 x 101 =
50X24=
=
25X40 =
310X6 =
=
450- 90 =
60-15 =
- =
90-5 =
960-30 =
24- =
1 1
—+ —=
+ =
+ 4 =
4 4
1 3
—+ —
6 -=
-6 =
2 4
3 1
— 十 — =
X =
=
5 4
5 1 _
25X =
=
-
6 6
5 1
- =
- =
12 6
6 2
4- =
3- =
-
7 3
(8)
(10)
(12)
1 2
+
2 + =
+5 =
6 9
1 3
—+ ——
-=
6 - =
6 10
-+ 2 =
X20 =
X =
9
3 7
X 30 =
x =
4 10
5 2 _
-7 =
- =
一
14 7
1 7 -
- =
- =
1 - —
10
(13)
(15)
(17)
2
-X3 =
二 e
88 x 32二
5
4
1
-X8 =
--8 =
39X 302弋
4
3
-X3 =
-10 =
19X 201〜
7
5
1
8 X -=
12
— -6=
67X 93Q
8
13
3 x —=
2
-+14 =
195X 41 —
10
7
10 x -=
11 ”
— -22=
392X12—
5
13
(14
1)
(16)
(18)
1
1
1
1
- X
-
18X 412
6
6
8
4
1 、,
3 _
1
3
-X
22X 198〜
5
4
5
10
4
1
9
2
-X
二
J 一
~r~ ——
310X41 —
7
7
4
3
5
2
7
14
-X
二
42X 192弋
8
9
9
15
5
2
2
12
-X
二
95X 192〜
4
3
7
7
3
2
5
8
-X
. -
39X 112〜
4
9
4
3
(19)
(21)
(23)
352 + 7=
_1
1 4--=
-X8=
4
5
7
462+ 9勺
_1
1 4--=
21X-=
2
7
7
425 + 60=
3
9
+ ——=
5
-X 15=
5
20
8
334 + 80=
5
5 _
6X -=
6
6
8
360 + 49=
2
__5_ =
5
—X 7=
3
12
11
6
1
4
238 + 31 =
36 x —=
7
6
9
(20)
(22
)
(24)
1
1
5 、,
7
152 + 3=
一 +
- X
6
6
9
10
2 +
3 =
3 、,
立
472 +8〜
—X
10
4
6
415 + 40―
1 +
2 _ -
3〜 -X
2
9
9
8
8
7
7 _
7
5
364 -