Round 12.346 to the nearest tenth.

Round 12.346 to the nearest tenth.

• A. 12.4
• B. 12.35
• C. 12.34
• D. 12.3

Answer: (D)

Rounding to the nearest tenth means keeping one digit after the decimal point and using the next digit to decide whether to bump that tenths digit up. For 12.346, the tenths place is 3 (12.3). The hundredths place is 4. Since 4 is less than 5, we do not increase the tenths digit. So it rounds to 12.3. 12.4 would happen if the hundredths digit were 5 or higher. The numbers 12.35 and 12.34 are rounded to two decimals, not to the nearest tenth.

Rounding to the nearest tenth means keeping one digit after the decimal point and using the next digit to decide whether to bump that tenths digit up. For 12.346, the tenths place is 3 (12.3). The hundredths place is 4. Since 4 is less than 5, we do not increase the tenths digit. So it rounds to 12.3.

12.4 would happen if the hundredths digit were 5 or higher. The numbers 12.35 and 12.34 are rounded to two decimals, not to the nearest tenth.