0.285 to the nearest tenth is 0.3.
You could've got this answer by: -Checking which number spot was tenth; the first number after the decimal is. -Checking the number to the right of it; which was 8. If the number is higher than 5, round up. If it's lower than 4, round down.
To round 0.285 to the nearest tenth, identify the tenths digit (2) and the next digit (8). Since 8 is greater than 5, round up to 3. Therefore, 0.285 rounded to the nearest tenth is 0.3.
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