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VivaciousLyla
Hey!

You can round 83 and 57 to the closest whole numbers:

80 × 60 = 4,800

So, now you know that your answer should be close to 4,800
If you want to estimate the answer, you'll need to change the two numbers that make them easier to multiply in your head or on paper. Round 83 to 80, and 57 to 60. That makes 60 times 80; to give an estimate on paper. That would give it an estimate of around 4,800.

Hope this helps! :D