Play games on Puzzle Playground
TIP: Use white to remove color from individual squares.
Swipe across horizontally or vertically to color an entire row or column.
Select a number from the top and left rows to see the sum (dark gray).
sign to see all the doubles sums.
Interactive Addition Chart - Learning Connections
Mental Math - visualize addition patterns
Common Core Connections - Grades K to 2
Add and subtract with 20.
Commutative property of addition.
Look for and make use of structure.
More Math Games to Play