Interactive
Grade 1
Missing Numbers in Addition and Subtraction Equations Grade 1
addition and subtraction · 1.OA.D.8
$1.50
CCSS.Math.Content.1.OA.D.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 = _.
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