Question
Find the following values without a calculator.

  1. _____ + 11 = 47
  2. _____ + 15 = 54
  3. _____ + 45 = 93
  4. _____ + 93 = 106
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. _____ + 11 = 47
  2. _____ + 15 = 54
  3. _____ + 45 = 93
  4. _____ + 93 = 106