Number bonds to 20
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Number bonds to 20

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Subject Math — Operations and Algebraic Thinking
Grade Level Grades K-5
Standards Alignment
Common Core State Standards
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About This Lesson

A fun activity for children to practice number bonds to 20. Includes addition and subtraction sums. Complete regularly to increase children's rapid recall of number facts. 15 progressive PDF worksheets to download free. Aligned to Common Core State Standards: K.OA.1, 1.OA.1, 2.OA.2, 3.OA.1

Standards

Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
Read More About CCSS.Math.Content.K.OA.A.1
Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Read More About CCSS.Math.Content.1.OA.A.1
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Read More About CCSS.Math.Content.2.OA.B.2
Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.
Read More About CCSS.Math.Content.3.OA.A.1

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