Question
Find the following values without a calculator.

  1. 40 - 9 = _____
  2. 68 - 6 = _____
  3. 91 - 33 = _____
  4. 73 - 32 = _____
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. 40 - 9 = _____
  2. 68 - 6 = _____
  3. 91 - 33 = _____
  4. 73 - 32 = _____