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Addition and Subtraction Properties and Strategies

1st Grade · Math · UK National Curriculum

8 lessons

Goal

Understand properties of addition and subtraction, use inverse relationships to solve missing number problems, and apply grouping strategies to add three numbers.

8 lessons
0 of 8 done
  1. Exploring Commutativity in AdditionUp next
  2. Demonstrating That Subtraction Is Not CommutativeNot started yet
  3. Using the Inverse Relationship to Form Fact FamiliesNot started yet
  4. Using Addition Facts to Solve SubtractionNot started yet
  5. Checking Calculations Using the Inverse OperationYou are here
  6. Finding Missing Numbers in EquationsNot started yet
  7. Adding Three One-Digit Numbers by Making TenNot started yet
  8. Adding Three One-Digit Numbers Using DoublesNot started yet
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Learning standards covered

gbUK-NC-MATH-42National Curriculum (England) · Math · 1st Grade

recognise and use the inverse relationship between addition and subtraction and use this to check calculations and solve missing number problems.

Open Global Standard:OGM.3.OA.2OGM.3.OA.6
GlobalOGM.3.OA.2
GlobalOGM.3.OA.6