1. Doubles Math Facts! Doubles Math Facts!
By Stephanie Bugglin

2. Double is 2 of he same thing!
What is Double?
Double is 2 of he same thing!
2a=a+a

3. Adding Doubles
Adding a number to itself.
Example: 5+5= 10

4. Practice and Examples
Volunteer?
3+3=

5. Multiplying Doubles (x2)
When multiplying by 2, you are making 2 groups of the thing you are multiplying.
Example: 4x2=8

6. Practice and Examples
2x5=
(2 groups of 5)
Now count them!

7. What do you do when you add double?
Add the number to itself (9+9)
Add the number to the next higher number (8+9)
Add 2 to the number (2+9)
Next Question

8. Correct!

9. Try Again.
8+9=17
When you add doubles, you add the same number twice. 8+8 or 9+9 would both be doubles facts

10. Try again.
2+9=11
Adding 2+2 or 9+9 would be examples of doubles facts

11. What do you do when you double while multiplying?
Multiply the number by itself (8x8=8 groups of 8)
Multiply the number by 2 (8x2= 2 groups of 8)
Multiply the number by 1(8x1=a group of 8)
Next Question

12. Try again. 8x8=64 This would be 8 groups of 8
Double 8 is 8x2 (2 groups of 8)

13. Correct!

14. Try again.
8x1=8 This is 1 group of 8
Doubling 8 is 2 groups of 8.

15. What is 4+4? 6 12 8
Next Question

16. Try again.
3+3=6
4+4=8

17. Try again.
6+6=12
4+4=8

18. Correct!

19. What is 3x3? 6 9 4
Next Question

20. Try again.
3+3=6
3x3=9

21. Correct!

22. Try again.
2x2=4
3x3=9

23. Double means 2!
True
False

24. Correct!

25. Try again.
Doubling something means you have 2 of them!

26. Sources: Stephanie Bugglin
Great job!
Sources: Stephanie Bugglin