Addition facts to 20. Subtraction facts to 20 -------------------------------------- Addition facts to 20. sample: 8+5=13 Back to Top -------------------------------------- Subtraction facts to 20 Sample: 16-8=8 Back to Top
Addition facts to 20.
sample: 8+5=13 Back to Top
sample: 8+5=13
Subtraction facts to 20
Sample: 16-8=8 Back to Top
Sample: 16-8=8
Last Modified: Wednesday September 21 2005
