Question
Find the following values without a calculator.
  1. - 20 - 18 = _______
  2. - 11 + 13 = _______
  3. - 17 + 12 = _______
  4. - 18 - 17 = _______
1 m

Click button first when a symbol is required. X

Find the following values without a calculator.
  1. - 20 - 18 = _______
  2. - 11 + 13 = _______
  3. - 17 + 12 = _______
  4. - 18 - 17 = _______