Smart Math guide · Problem Solving

Let Units Guide the Formula

Units can show which operations make sense and expose mismatched formulas.

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The method

How to use it

  1. Write units beside every quantity.
  2. Track units through multiplication/division.
  3. Confirm the final unit matches what is asked.
Worked example

See it in action

miles ÷ miles/hour = hours, so time = distance ÷ speed.

Check your thinking

How to verify it

If the result has miles²/hour, the setup is wrong.

Keep learning

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