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Choose the images to explore the teaching objectives of each game.

Mathematics / Operations

Calculator

Teaching objectives:

  • Calculator + and - functions.
  • Mental arithmetic: addition and subtraction.

Instructions:

This calculator is broken! Use the numbers at your disposal to find the result.

Difficulty levels:

1
Additions where the result is less than 10.
2
Subtractions where the result is less than 10.
3
Additions (result between 20 and 40) and subtractions (result less than 20).

Topics covered:

addition substraction calculator mental arithmetic symbol

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