Question
Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3)

  1. 12 - _____ = 6
  2. 20 - _____ = 18
  3. 15 - _____ = 11
2 m

Click button first when a symbol is required. X

Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3)

  1. 12 - _____ = 6
  2. 20 - _____ = 18
  3. 15 - _____ = 11