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Subtraction Facts

1st Grade

Alabama Course of Study Standards: 5

Relate counting to addition and subtraction.Example: counting on 2 to add 2

Common Core State Standards: 1.OA.C.5

Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

North Carolina - Standard Course of Study: 1.OA.9

Demonstrate fluency with addition and subtraction within 10.

New York State Next Generation Learning Standards: 1.OA.5

Relate counting to addition and subtraction.
e.g., by counting on 2 to add 2

Ohio's Learning Standards: 1.OA.5

Relate counting to addition and subtraction, e.g., by counting on 2 to add 2.

Tennessee Academic Standards: 1.OA.C.6

Fluently add and subtract within 20 using mental strategies. By the end of 1st grade, know from memory all sums up to 10.

Wisconsin Academic Standards: 1.OA.C.5

Use counting and subitizing strategies to explain addition and subtraction.
  1. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  2. Use conceptual subitizing in unstructured arrangements with totals up to 10 and structured arrangements anchored to 5 or 10 (e.g., ten frames, double ten frames, math rack/rekenrek) with totals up to 20 to relate the compositions and decompositions to addition and subtraction.

Alabama Course of Study Standards: 6

Add and subtract within 20.
  1. Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by counting on.
  2. Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by making ten
  3. Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by decomposing a number leading to a ten.
    Example: 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9
  4. Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by using the relationship between addition and subtraction.
    Example: Knowing that 8 + 4 = 12, one knows 12 - 8 = 4.
  5. Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by creating equivalent but easier or known sums.
    Example: adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13

Arizona Academic Standards: 1.OA.C.6

Fluently add and subtract within 10.

Common Core State Standards: 1.OA.C.6

Tennessee Academic Standards: 1.OA.C.5

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Georgia Standards of Excellence (GSE): 1.NR.2.4

Fluently add and subtract within 10 using a variety of strategies.

Louisiana Academic Standards: 1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use mental strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

North Carolina - Standard Course of Study: 1.OA.6

Add and subtract, within 20, using strategies such as:
  • Counting on
  • Making ten
  • Decomposing a number leading to a ten
  • Using the relationship between addition and subtraction
  • Using a number line
  • Creating equivalent but simpler or known sums

New York State Next Generation Learning Standards: 1.OA.6

  1. Add and subtract within 20. Use strategies such as:
    • counting on;
    • making ten;
      e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14
    • decomposing a number leading to a ten;
      e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9
    • using the relationship between addition and subtraction; and
      e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4
    • creating equivalent but easier or known sums.
      e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13
  2. Fluently add and subtract within 10.

Ohio's Learning Standards: 1.OA.6

Add and subtract within 20, demonstrating fluencyG with various strategies for addition and subtraction within 10. Strategies may include counting on; making ten, e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14; decomposing a number leading to a ten, e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9; using the relationship between addition and subtraction, e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4; and creating equivalent but easier or known sums, e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13.

Wisconsin Academic Standards: 1.OA.C.6

Use multiple strategies to add and subtract within 20.
  1. Flexibly and efficiently add and subtract within 10 using strategies that may include mental images and composing and decomposing up to 10.
  2. Add and subtract within 20 using objects, drawings, or equations. Use multiple strategies that may include counting on; making a ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Texas Essential Knowledge and Skills (TEKS): 1.3.D

apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10;

Pennsylvania Core Standards: CC.2.2.1.A.1

Represent and solve problems involving addition and subtraction within 20.

Florida - Benchmarks for Excellent Student Thinking: MA.1.NSO.2.1

Recall addition facts with sums to 10 and related subtraction facts with automaticity.

Florida - Benchmarks for Excellent Student Thinking: MA.1.NSO.2.2

Add two whole numbers with sums from 0 to 20, and subtract using related facts with procedural reliability.

Florida - Benchmarks for Excellent Student Thinking: MA.1.NSO.2.5

Explore subtraction of a one-digit number from a two-digit number.

Georgia Standards of Excellence (GSE): 1.NR.2.4

Fluently add and subtract within 10 using a variety of strategies.
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