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Stage 6

Objectives
  • Use place value understanding to add and subtract two-digit numbers
  • Comprehend, reason and solve word problems using addition and subtraction skills
  • Hone addition and subtraction proficiency by solving problems requiring precision and repeated reasoning
  • Develop critical thinking skills around addition and subtraction concepts by solving problems requiring abstraction, reasoning and perseverance
Unit 1: Adding two-digit numbers

Students learn to add two-digit numbers.

Unit Review
  1. Addition with tens
  2. Addition of two-digit and single-digit numbers - no carry forward
  3. Addition of two-digit and single-digit numbers - with carry forward
  4. Addition of two two-digit numbers
  5. Addition of three two-digit numbers
Unit 2: Addition - word problems

Students learn to comprehend simple word problems and apply addition skills to solve them.

Unit Review
  1. Solve using addition
  2. Addition expression from description
  3. Solve using addition - 3 numbers
Unit 3: Addition - critical thinking

Students learn to solve problems using addition skills.

Unit Review
  1. Choose correct expression
  2. Compare two addition expressions
  3. Identify addition rule
  4. Addition of 2-digit numbers - find the missing number
  5. Addition of 2-digit numbers - find the missing number in an inequality
  6. Addition of 2-digit numbers - find the missing digit
  7. Rounding to estimate addition
Unit 4: Subtraction of two-digit numbers

Students learn to subtract two-digit numbers.

Unit Review
  1. Subtraction of tens
  2. Subtraction of a single-digit number from tens
  3. Subtraction of two-digit numbers
Unit 5: Subtraction - word problems

Students learn to comprehend simple word problems and apply subtraction skills to solve them.

Unit Review
  1. Solve using subtraction
  2. Subtraction expression from description
Unit 6: Subtraction - critical thinking

Students learn to solve problems using subtraction skills.

Unit Review
  1. Match answer with subtraction expression (2-digit numbers)
  2. Compare two subtraction expressions (2-digit numbers)
  3. Identify subtraction rule
  4. Subtraction - find the missing number (2-digit numbers)
  5. Subtraction - find the missing number in an inequality (2-digit numbers)
  6. Subtraction - find the missing digit (2-digit numbers)
  7. Rounding to estimate subtraction
Unit 7: Properties of addition and subtraction

Students learn about properties of addition and subtraction - commutative, associative, additive and subtractive identities.

Unit Review
  1. Identify properties of addition and subtraction
Unit 8: Addition and subtraction of two-digit numbers

Practice addition and subtraction of two-digit numbers.

Unit Review
  1. Add and subtract two-digit numbers
  2. Solve using addition and subtraction
  3. Addition and subtraction expressions from description
  4. Match answer with expression (2-digit numbers)
  5. Addition and subtraction - compare two expressions (2-digit numbers)
Unit 9: Addition and subtraction - problem solving

Solve simple problems using addition and subtraction skills for numbers up to two digits.

Unit Review
  1. Identify addition or subtraction rule (2-digit numbers)
  2. Find the missing number given an equation or inequality
  3. Find the missing digit (2-digit numbers)
  4. Find the missing operation sign (2-digit numbers)