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subtraction

Difference Magic Squares

  • Problem Solving Activities
  • Number and Algebra
  • Level Six

This is a problem from the number and algebra strand.

Gulls

  • Problem Solving Activities
  • Number and Algebra
  • Level Three

Select the appropriate number operation(s) to solve problems.

Devise and use problem solving strategies (act it out, draw a picture, organised list)

The 500 Problem

  • Problem Solving Activities
  • Number and Algebra
  • Level Three

Explain face, place and total value of numbers

Solve 3-digit subtraction problems

Devise and use problem solving strategies (guess and check, think logically)

Shopping

  • Problem Solving Activities
  • Number and Algebra
  • Level Two

Give change for sums of money

Solve subtraction problems presented in different forms

Devise and use problem solving strategies to explore situations mathematically (guess and check, use drawing, use equipment, be systematic, act it out).

Rolling Problems

  • Numeracy Activities
  • Number and Algebra
  • Level Three

In this activity we work with four digit numbers, adding and subtracting 1, 10, 100 and 1000 to these.

Algebra Relays

  • Numeracy Activities
  • Number and Algebra
  • Level Three

This activity provides students with a fun, game context in which to practice their early algebra skills.

Cards to 24

  • Numeracy Activities
  • Number and Algebra
  • Level Three

In this activity students use a deck of cards (or create their own set of cards with numbers on) to play a version of the 24 game.  Students will use four cards and combinations of the four arithmetic operations to try to make a total of 24.


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