Question
Find the following values without a calculator.

  1. 8 + 8 + 4 = _____
  2. 2 + _____ + 8 = 14
  3. 15 - 1 - 1 = ______
  4. _____ - 7 - 7 = 7
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. 8 + 8 + 4 = _____
  2. 2 + _____ + 8 = 14
  3. 15 - 1 - 1 = ______
  4. _____ - 7 - 7 = 7