Doubles Jeopardy!

Doubles Facts

100

I am the SUM of this doubles fact: 4 + 4 = ?

8

200

I am the SUM of this doubles fact 7 + 7 =?

14

300

I am the SUM of this doubles fact 6 + 6 =

12

400

I am the SUM of this doubles fact 8 + 8 =

16

500

I am the SUM of this fact 9 + 9 =

18

+1/-1 Doubles Facts

100

What doubles facts can I use to solve 2 + 3?

2 + 2 + 1 = 5

3 + 3 - 1 = 5

200

What doubles facts can I use to solve 5 + 6?

5 + 5 + 1 = 11

6 + 6 - 1 = 11

300

What doubles facts can I use to solve 7 + 8?

7 + 7 + 1= 15

8 + 8 - 1 = 15

400

Q4

6 + 6 + 1 = 13

500

Q3

4 + 4 + 1 = 9

Missing Addend

100

I am a missing addend, when you add 2 to me, the sum is 4. (hint: 2 + ? = 4)

2

200

I am a missing addend, when you add 6 to me, the sum is 12. (hint: 6 + ? = 12)

6

300

I am a missing addend, when you add 8 to me, the sum is 16.

8

400

I am a missing addend, when you add 7 to me, the sum is 10.

3

500

I am a missing addend, when you add 2 to me, the sum is 20.

18

What's the fact?

100

I am a doubles fact with a SUM of 6.

3 + 3 = 6

200

I am a doubles fact with a SUM of 8

4 + 4 = 8

300

I am a doubles fact with a SUM of 12

6 + 6 = 12

400

I am a doubles fact with a SUM of 18

9 + 9 = 18

500

I am a doubles fact with a SUM of 20

10 + 10 = 20