Rounding Numbers

Round $3.847$ to $1$ decimal place.

• 1Look at the digit after the 1st decimal place: it is $4$
• 2$4$ is below $5$, so round down (keep the 1st decimal digit as it is)

Answer: $3.8$

Round $3.847$ to $2$ decimal places.

• 1Look at the digit after the 2nd decimal place: it is $7$
• 2$7$ is $5$ or more, so round up (increase the 2nd decimal digit by $1$)

Answer: $3.85$

Round $2.995$ to $2$ decimal places.

• 1Look at the digit after the 2nd decimal place: it is $5$
• 2$5$ rounds up, so the 2nd decimal digit ($9$) increases by $1$, which carries: $2.99+0.01=3.00$

Answer: $3.00$