内容正文:
练习二
20以内的退位减法
义务教育人教版一年级下册
2
÷
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13
4
9+4=
13-9=
1.
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14
5
9+5=
14-9=
2.连一连。
11-9
17-9
18-9
15-9
12-9
16-9
10 14 13 17 19 12 15 18 16 11
-9
1
5
4
8
10
3
6
9
7
2
10-9=1
3.移动 ,每次用方格里的数减去 。
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15
17
14
12
16
13
18
2
5
8
3
6
7
9
4
4.照样子在 里填一填。
5.在猜灯谜活动中,第一小组猜中8个,第二小组猜
中9个。两个小组一共猜中多少个?
= (个)
8 + 9 17
0
10
6.
17-9+2=
12-9-3=
19-9-6=
6+5-9=
7+8-9=
18-5-9=
4
2
6
4
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7.
我收了16根胡萝卜,分给你9根。
你还剩几根?
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8.
= (个)
14 - 9 5
还要编几个?
一共要编14个,已经编好了9个。
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9.
在下面相邻两面 之间各插一面 。
一共可以插多少面 ?
答:一共可以插9面 。
10 - 1= 9(面)
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