Question
Find the following values without a calculator.

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