Round 3.146 to the nearest tenth.

Round 3.146 to the nearest tenth.

• A. 3.1
• B. 3.2
• C. 3.14
• D. 3.156

Answer: (A)

Rounding to the nearest tenth means keep one digit after the decimal and look at the next digit (the hundredths) to decide whether to bump the tenths digit. In 3.146, the tenths digit is 1 and the hundredths digit is 4, which is less than 5, so we do not increase the tenths digit. The result is 3.1. If the hundredths were 5 or more, it would become 3.2. The other options don’t match this rule or place value.

Rounding to the nearest tenth means keep one digit after the decimal and look at the next digit (the hundredths) to decide whether to bump the tenths digit. In 3.146, the tenths digit is 1 and the hundredths digit is 4, which is less than 5, so we do not increase the tenths digit. The result is 3.1. If the hundredths were 5 or more, it would become 3.2. The other options don’t match this rule or place value.