Final answer:
The smallest whole number that rounds to 60 when rounded to the nearest 10 is 55.
Step-by-step explanation:
The smallest whole number that rounds to 60 when rounded to the nearest 10 is 55. When rounding to the nearest 10, we look at the digit in the ones place. If it is 5 or greater, we round up. If it is less than 5, we round down. Since 55 is closer to 60 than to 50, it rounds up to 60.
Learn more about rounding to the nearest 10