Round the decimal 0.64 to the nearest tenth.

0.6

To round the decimal 0.64 to the nearest tenth, we look at the digit in the hundredths place, which is 4.

Since 4 is less than 5, we leave the digit in the tenths place (in this case, 6) unchanged.

Therefore, rounding 0.64 to the nearest tenth gives us 0.6.

To round a decimal to the nearest tenth, you need to look at the hundredths place value. In this case, the hundredths place is 4.

If the hundredths place value is less than 5, you round down. If the hundredths place value is 5 or greater, you round up.

Since 4 is less than 5, you round down.

Thus, rounding the decimal 0.64 to the nearest tenth gives us 0.6.