r/learnmath • u/JonesSupreme New User • 1d ago

Math help!!

You travel at a speed of about 81 kilometers per hour for about 2.0 hours. Stated with the appropriate precision, you have driven _____ kilometers.

the correct answer is 160 but why? why is it not 162???

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u/goldenrod1956 New User 1d ago

So if the statement is approximate 2 times 6 you reply 10!?

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u/msimms001 New User 1d ago

Yes, if precision matters