概要:+5=3+3+3=18-9=5-2=2+10=6+6=15-2=9+6=11+9=11+7=5+8=15-2=11+6=12+2+3=9+3=17-5=5+6=10+9=11-5=7-5+8=17-2=13-7=19-5=14-9=10-7=8-8+8=2+17=3+13=14-5=9+6=13-3=9-7=3+9=6+12=6+4=9+3=6+4=12-6=13-2上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] 下一页
口算练习(一)——20以内加减法速算,标签:一年级数学课外辅导大全,http://www.youer8.com3+3+3=
18-9=
5-2=
2+10=
6+6=
15-2=
9+6=
11+9=
11+7=
5+8=
15-2=
11+6=
12+2+3=
9+3=
17-5=
5+6=
10+9=
11-5=
7-5+8=
17-2=
13-7=
19-5=
14-9=
10-7=
8-8+8=
2+17=
3+13=
14-5=
9+6=
13-3=
9-7=
3+9=
6+12=
6+4=
9+3=
6+4=
12-6=
13-2
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