Question
Find the following values without a calculator.
  1. 20 + 89 = _____
  2. 14 + 13 = _____
  3. 25 + 59 = _____
  4. 51 + 49 = _____
3 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

(d)

Click button first when a symbol is required. X

Find the following values without a calculator.
  1. 20 + 89 = _____
  2. 14 + 13 = _____
  3. 25 + 59 = _____
  4. 51 + 49 = _____