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?