概要:18-9=19-4=16-7=5-5=4+3=7-6=11+9=6-1=4+4+4=9+6=13-5=5+7=9+3=15+5=6+8=9-7=3+9=6+8=17-2=12-4=8+8+2=16-2-3=2+7=12-9=2+17=7+2=9-2+8=9+3=13-7=8+5=12-6=5+6=13-6+6=17-2=18-9=19-7-3=11-4=8+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.com18-9=
19-4=
16-7=
5-5=
4+3=
7-6=
11+9=
6-1=
4+4+4=
9+6=
13-5=
5+7=
9+3=
15+5=
6+8=
9-7=
3+9=
6+8=
17-2=
12-4=
8+8+2=
16-2-3=
2+7=
12-9=
2+17=
7+2=
9-2+8=
9+3=
13-7=
8+5=
12-6=
5+6=
13-6+6=
17-2=
18-9=
19-7-3=
11-4=
8+
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