Math Playground for Teachers
Choose a starting number. Place the puzzle piece on the missing number in the grid.
Watch as the mystery picture appears.
Puzzle Pics Subtraction - Learning Connections
Common Core Connection for Grades 2 and 3
Use place value understanding and properties of operations to add and subtract.
Fluently add and subtract within 100.
Use strategies based on
place value and the properties of operations.
Make use of the relationship between addition and subtraction.
Fluently add and subtract within 20
using mental strategies.
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