How to Round a Decimal to the Ones Digit

The video tutorial demonstrates how to round a decimal number to the nearest whole number. It begins with a math question about rounding the length of a pencil from 13.8 cm to the ones place. The instructor explains the rounding process, focusing on identifying the ones place and applying rounding rules. The digit to the right of the ones place is examined to determine if the number should be rounded up or down. In this case, the number is rounded up to 14. The video concludes with encouragement to continue learning math.

What is the initial length of the pencil before rounding?

• 14.0 cm

• 13.8 cm

• 12.8 cm

• 13.5 cm

Which digit is in the ones place in the number 13.8?

• 8

• 3

• 0

• 1

According to rounding rules, what should you do if the digit to the right of the ones place is 8?

• Round down

• Round up

• Keep the same

• Ignore the digit

What is the final rounded length of the pencil?

• 13 cm

• 13.5 cm

• 14 cm

• 15 cm

What is the answer choice for the rounded length of the pencil?

• A

• B

• C

• D