Count On
7+8
15
8+__ =14
6
Which number sentence should not be included in this fact family?
3,4,7
a. 3+4=7
b. 4+3=7
c. 4-3=1
c
13 + 7 =
20
7+__ =15
8
Which number sentence is missing from this fact family?
8,9,17
8+9=17
9+8=17
17-9=8
17-8=9
12+6
18
6+__=13
7
Which number sentence is missing from this fact family?
5,8,13
5+8=13
13-5=8
13-8=5
8+5=13
24+6
9+ ___ =15
6
Which number sentence is missing from this fact family?
8,4,12
8+4=12
4+8=12
12-4=8
12-8=4
62 + 3=
65
18-7
11
___ + 9 =21
12
Which TWO number sentences are missing from this fact family?
5,17,22
5+17=22
17+5=22
22-17=5
22-5=17