Question
Find the following values without a calculator.

  1. _____ + 9 = 35
  2. _____ + 21 = 43
  3. _____ + 74 = 92
  4. _____ + 87 = 195
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. _____ + 9 = 35
  2. _____ + 21 = 43
  3. _____ + 74 = 92
  4. _____ + 87 = 195