Grade 1Addition & Subtraction

1.OA.D.8

Fill in the missing number: 8 + ? = 11.

Worksheets for this standard 2 topics

Find the Missing Number4 ways

Fact Family Houses1 way

The standard, officially

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 =?.

Builds on

1.OA.D.7Understand the equal sign

Leads to

4.NF.B.3Add and subtract fractions 4.MD.C.7Add and subtract angle measures