Question
Find the following values without a calculator.

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