Home > Math > Addition > Addition Basic > Addition Facts Sums to 20 > Sums to 20 Worksheet - #1Sums to 20 Worksheet – #1 ■Addition Basic■Addition Facts Sums to 20 Want more content like this? Access over 6,000 exclusive items. Members only. $4.16/month when paid annually $8.99/month May 9, 20140 comments Your child is the best and deserves the best! Use our free printable addition math worksheets and know that you are using the highest quality material available! Get it now!