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Level Three > Number and Algebra

Solve addition and subtraction problems using decomposition, leading to a written algorithm.

Achievement Objectives
Teaching resources for this Achievement Objective:

Mental or Written?

  • Numeracy Activities
  • Number and Algebra
  • Level Four

Carry out column addition and subtraction for whole numbers and decimals.

Solve addition and subtraction problems using decomposition, leading to a written algorithm.

Close to 100

  • Numeracy Activities
  • Number and Algebra
  • Level Two

Recall the number of tens and hundreds in 100s and 1000s.

Identify symbols for any fraction, including tenths, hundredths, thousandths, and those greater than 1.

Solve addition and subtraction problems using decomposition, leading to a written algorithm

 

A Standard Written Form for Addition

  • Numeracy Activities
  • Number and Algebra
  • Level Three

Solve addition and subtraction problems using decomposition, leading to a written algorithm.

Decomposition - A Written Form of Subtraction

  • Numeracy Activities
  • Number and Algebra
  • Level Three

Solve addition and subtraction problems using decomposition, leading to a written algorithm.

Having fun with the vertical algorithm

  • Secondary Activities
  • Number and Algebra
  • Level Four

These exercises and activities are for students to use independently of the teacher to practice and develop their number properties. Some are suitable for homework, others require follow-up during teaching sessions