概要:8=3+9=8+7=7+13=7-5=11-1=16-8=10-5-5=19-1=9+1=14-9=16-8=4+7=10+6+4=9-2=5+7-4=15-6=6+9+1=14-9=1+3+9=9+3=12+3-9=4+5=17-3+6=3+10=7-5+5=10-4=12+1=7+5=5+11+3=18-11=9-2+6=5-5=4+6=19-17=2+2+12=3+14=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+9=
8+7=
7+13=
7-5=
11-1=
16-8=
10-5-5=
19-1=
9+1=
14-9=
16-8=
4+7=
10+6+4=
9-2=
5+7-4=
15-6=
6+9+1=
14-9=
1+3+9=
9+3=
12+3-9=
4+5=
17-3+6=
3+10=
7-5+5=
10-4=
12+1=
7+5=
5+11+3=
18-11=
9-2+6=
5-5=
4+6=
19-17=
2+2+12=
3+14=
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