10 | 11 | 12 | 13 | 14 | 15 |
-5
5 |
16-9=-8=-=-=-=-=-
13-4= | 13-5= | 13-6= |
13-9= | 13-8= | 13-7= |
= (本)
5+=12 8+=13 3+=19
10-=3 14-=4 -9=10
8+=10 +3=10 10-=6 12-=2
+3=13 17-=12 -7=3 -5=10
14-58 13-66 17-69
12-76 15-87 12-86
①8+=15 ②9+=14 ③+9 =15
④15– 8= ⑤14–9 = ⑥15 – 9 =
⑦15–7= ⑧14–5 = ⑨15-6 =
12-7= 14-6= 15-9= 11-4=
18-9= 13-5= 16-7= 14-7=
比 少多少个?
1220 14-47 99-0 8+76+9
7+=13 14-=5 17+=19