Question
Find the following values without a calculator.
  1. 59 + 23 = _____
  2. 78 + 36 = _____
  3. 81 + 88 = _____
  4. 58 + 31 = _____
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. 59 + 23 = _____
  2. 78 + 36 = _____
  3. 81 + 88 = _____
  4. 58 + 31 = _____