Question
Find the following values without a calculator.
Which is more?
  1. 5 or 1 
  2. 15 or 20
  3. 79 or 81
1 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

Find the following values without a calculator.
Which is more?
  1. 5 or 1 
  2. 15 or 20
  3. 79 or 81