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Find unknown quantities in number sentences involving addition and subtraction and identify equivalent number sentences involving addition and subtraction

Elaborations

  • writing number sentences to represent and answer questions such as: ‘When a number is added to 23 the answer is the same as 57 minus 19. What is the number?’ (Skills: Numeracy, Critical and Creative Thinking)
  • using partitioning to find unknown quantities in number sentences (Skills: Literacy, Numeracy)

(View this topic on www.australiancurriculum.edu.au )