← All Standards

Grade 1

• Data Analysis

  • 1.DA.A

• Number & Operations: Base Ten

  • 1.NBT.C
  • 1.NBT.C.13.c

• Operations & Algebraic Thinking

  • 1.OA.A
  • 1.OA.A.1
  • 1.OA.A.1.a
  • 1.OA.A.1.b
  • 1.OA.A.1.c
  • 1.OA.A.2
  • 1.OA.B
  • 1.OA.B.3
  • 1.OA.B.4
  • 1.OA.C
  • 1.OA.C.5
  • 1.OA.C.6
  • 1.OA.C.6.a
  • 1.OA.C.6.b
  • 1.OA.C.6.c
  • 1.OA.C.6.d
  • 1.OA.C.6.e
  • 1.OA.D
  • 1.OA.D.7
  • 1.OA.D.8
  • 1.OA.E.9

Alabama Math Standard: 1.OA.D.8

Solve for the unknown whole number in various positions in an addition or subtraction equation, relating three whole numbers that would make it true.

Back to School Math Worksheets

In these math problems, the solution is already given. But another number is missing!

Spring Math Worksheets: Addition and Subtraction

Four sets of 2-digit and 3-digit addition and subtraction practice. But the unknown isn’t where you expect it to be!