Addition Facts. 1st Grade Math Worksheets and Answer key, Study Guides and Vocabulary Sets.. Kansas Academic Standards

◂Math Worksheets and Study Guides First Grade. Addition Facts

Study Guide

Addition Facts Worksheet/Answer key

Addition and Subtraction Worksheet/Answer key

Add it up for Christmas Vocabulary/Answer key

Addition Facts Vocabulary/Answer key

Addition Facts

Create And Print more Subtraction Facts worksheets with Math Facts Worksheets generator

The resources above correspond to the standards listed below:

Kansas Academic Standards

KS.1.OA. Operations and Algebraic Thinking

Understand and apply properties of operations and the relationship between addition and subtraction.

1.OA.4. example, subtract 10−8 by finding the number that makes 10 when added to 8.

Add and subtract within 20.

1.OA.5. Relate counting to addition and subtraction (e.g. by counting on 2 to add 2, counting back 1 to subtract 1).

1.OA.6. Add and subtract within 20, demonstrating fluency (efficiently, accurately, and flexibly) 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).

KS.1.NBT. Number and Operations in Base Ten

Understand place value.

1.NBT.2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

1.NBT.2d. Show flexibility in composing and decomposing tens and ones (e.g. 20 can be composed from 2 tens or 1 ten and 10 ones, or 20 ones.)

Standards

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