Suggested grade level: 1st and 2nd
Includes center sign, 36 addition cards and matching worksheet.
Students find the missing addends on each of the cards.
It is helpful to attach velcro on the cards so that they will stay in place.
This center aligns with the First Grade Common Core Standards:
Work with addition and subtraction equations
1.OA.8. Determine the unknown whole number in an addition or
subtraction equation relating three whole numbers.
For example, determine the unknown number that makes
the equation true in each of the equations 8 + ? = 11, 5 =
_ - 3, 6 + 6 = _.
Graphics used with permission of Annie Things Possible.