Ms. Jacoby's Second Grade
November Math Facts Goal:
Learn all "13" Addition/Subtraction Facts
and Doubles
Review all September and October Math Facts

4+9=13 9+4=13 13-4=9 13-9=4	5+8=13 8+5=13 13-5=8 13-8=5
6+7=13 7+6=13 13-6=7 13-7=6	Have fun practicing your math facts online at Math Counts.
Remember: Learn="Instant" Answer

Doubles Learning these will make learning other facts easier.
1+1=2	2+2=4
3+3=6	4+4=8
5+5=10	6+6=12
7+7=14	8+8=16
9+9=18	10+10=20
Challenge: The answer in an addition problem is called the sum. What do you notice about the sums of doubles?