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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 OperationNot started yet
  6. Finding Missing Numbers in EquationsNot started yet
  7. Adding Three One-Digit Numbers by Making TenYou are here
  8. Adding Three One-Digit Numbers Using DoublesNot started yet
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Learning standards covered

gbUK-NC-MATH-40National Curriculum (England) · Math · 1st Grade

add and subtract numbers using concrete objects, pictorial representations, and mentally, including: adding three one-digit numbers

Open Global Standard:OGM.3.NBT.7
gbUK-NC-MATH-41National Curriculum (England) · Math · 1st Grade

show that addition of two numbers can be done in any order (commutative) and subtraction of one number from another cannot

Open Global Standard:OGM.3.OA.6
GlobalOGM.3.NBT.7
GlobalOGM.3.OA.6