Question
Find the following values without a calculator. 
Subtract the following numbers from 20.
Give your answers in this manner. (Eg 1, 2, 3)

  1. 5
  2. 1
  3. 6
1 m

Click button first when a symbol is required. X

Find the following values without a calculator. 
Subtract the following numbers from 20.
Give your answers in this manner. (Eg 1, 2, 3)

  1. 5
  2. 1
  3. 6