Question
Find the following values without a calculator.

  1. _____ + 13 = 42
  2. _____ + 6 = 38
  3. _____ + 69 = 97
  4. _____ + 58 = 182
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. _____ + 13 = 42
  2. _____ + 6 = 38
  3. _____ + 69 = 97
  4. _____ + 58 = 182