ROUNDING RYHME
Find your place
Look next door
5 or higher? Add one more
4 or less? Let it rest
1 2 3 4 . 5 6 7 8 9 ≈ 1 2 3 4 . 5 7
7 is greater than 5, so the number is closer to 1234.57 than 1234.56
1 2 3 4 . 5 6 7 8 9 ≈ 1 2 3 0
4 is less than 5, so the number is closer to 1230 than 1240
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