Teaching Resource
Combinations of 20 Poster
1 page|Grades: 2 - 3A poster showing the combinations of 20.
Use this poster in your classroom to show your students visually the numbers that add together to make 20.
Common Core Curriculum alignment
- CCSS.MATH.CONTENT.2.OA.B.2
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
- CCSS.MATH.CONTENT.3.NBT.A.2
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
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