Page 12 - Facto Lv.1_C1 Answer Key
P. 12
+ =7 15
-8
7
8 - 1 =7 7
5 + 8 =13 18
13 - 5
1 + 4 + 8 =13
13
8-5+4=7 8-(5-4)=7 13-11=2 ( 13-2=11)
13-8=5 ( 13-5=8)
5+7=12 12-8=4 ( 12-4=8)
7+9=16 12-7=5 ( 12-5=7)
5+12=17 11-7=4 ( 11-4=7)
7+12=19 7-5=2 ( 7-2=5)
-8
7
8 - 1 =7 7
5 + 8 =13 18
13 - 5
1 + 4 + 8 =13
13
8-5+4=7 8-(5-4)=7 13-11=2 ( 13-2=11)
13-8=5 ( 13-5=8)
5+7=12 12-8=4 ( 12-4=8)
7+9=16 12-7=5 ( 12-5=7)
5+12=17 11-7=4 ( 11-4=7)
7+12=19 7-5=2 ( 7-2=5)
