Question
Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)

  1. 423 + 1 = ______
  2. 21 + 31 = _____
  3. 538 + 420 = _____
  4. 2775 + 210 = _____
1 m

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Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)

  1. 423 + 1 = ______
  2. 21 + 31 = _____
  3. 538 + 420 = _____
  4. 2775 + 210 = _____