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Add and subtract two-digit numbers (no regrouping)

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Learn it Add or subtract the ones, then the tens. With no regrouping, each column stands alone.

Example: $34 + 25$

  1. Ones: 4 + 5 = 9.
  2. Tens: 3 + 2 = 5.
  3. $34 + 25 = $ 59.

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