Question
Find the following values without a calculator.

  1. 3 + 9 + 3 = _____
  2. 4 + _____ + 5 = 12
  3. 16 - 8 - 6 = ______
  4. _____ - 6 - 3 = 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. 3 + 9 + 3 = _____
  2. 4 + _____ + 5 = 12
  3. 16 - 8 - 6 = ______
  4. _____ - 6 - 3 = 7