What's my rule?
rule +5
in out
5 ____
9 _____
in out
5 10
9 14
Write the fact family for 9, 4, 5
____+____=
____+____=
____-____=
____-_____=
4+5=9
5+4=9
9-4=5
9-5=4
The dealer says 10. Your partner has a 5. What is your number?
5+___=10
10-5=___
5!!!
You are playing Subtraction Top it. You grab a 16 and a 8. Write the subtraction fact.
16-8=8
5-0=
5
rule +2
in out
3 ___
6 ___
9 ___
in out
3 5
6 8
9 11
Write the fact family for 10, 6, 4
10-6=4
10-4=6
6+4=10
4+6=10
The dealer says 12. Your partner has a 5. What is your number?
7
12-5=7
You are playing Subtraction Top it. You grab a 15 and a 8. Write the subtraction fact.
15-8=7
8-___=7
1
Rule -5
in out
15 ____
12 ____
11 ____
in out
15 10
12 7
11 6
Write the fact family for 12, 7,5
7+5=12, 5+7=12, 12-5=7, 12-7=5
The dealer says 15. Your partner has a 5. What is your number?
15-5=10
10
You are playing Subtraction Top it. You grab a 19 and a 9. Write the subtraction fact.
19-9=10
____-0= 11
11
Rule ????
in out
2 8
4 10
5 11
Rule +6
What is the missing number in this fact family 10, 9, ?
1
The dealer says 20. Your partner has a 4. What is your number?
20-4=16
4+___=20
16
You are playing Subtraction Top it. You grab a 14 and a 5. Write the subtraction fact.
14-5=9
___-1= 6
7
Rule -3
in out
4 1
____ 7
12 ____
in out
4 1
10 7
12 9
What is the missing number in this fact family 15, 8, ?
7
The dealer says 8. Your partner has a 5. What is your number?
5+___=8
8-5=3
3
You are playing Subtraction Top it. You grab a 20 and a 8. Write the subtraction fact.
20-8=12
12-3=
9