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The 7 in 3.276 is in the thousandths place. When rounding to the nearest tenths, we look at the digit right after the tenths place. Since the 7 is greater than 5, the tenths digit remains the same. Therefore, rounding 3.276 to the nearest tenths would be 3.3.
The digit after (to the right of) the tenths is the hundredths which is a 7 and being 5 or more the tenths round up: 9.074 → 9.1 to the nearest tenth.
8.7
7, as when you have a number with any digit of 5 or more in the tenths place, you round up.
When rounding 6.974 to the tenths place, we look at the digit in the hundredths place, which is 7. Since 7 is greater than or equal to 5, we round up the digit in the tenths place, which is 9. Therefore, 6.974 rounded to the tenths is 7.
To round to the nearest tenth use the hundredth digit to decide to round up or down. The hundredths digit is a 7 so round up. The tenths digit is a 9, so adding 1 gives 10, which means keep the 0 in the tenths column and add 1 to the ones column: 30.97 → 31.0 to the nearest tenth Note that the .0 is normally not written, but as it is written it is significant: it shows the number is accurate to the nearest tenth.