Question
Find the following values without a calculator.

  1. 9 + 5 + 3 = _____
  2. 7 + _____ + 3 = 13
  3. 19 - 7 - 8 = ______
  4. _____ - 5 - 4 = 6
4 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. 9 + 5 + 3 = _____
  2. 7 + _____ + 3 = 13
  3. 19 - 7 - 8 = ______
  4. _____ - 5 - 4 = 6