How to Round Numbers to the Nearest Tenth and Hundredth

TL;DR

To round numbers to the nearest tenth, look at the hundredths place; if it's 5 or greater, round up, otherwise round down. For rounding to the nearest hundredth, check the thousandths place using the same rules. Rounding to the nearest hour requires examining the tenths place and following the same round-up or round-down principles.

Transcript

• [Instructor] Joey used 0.432 pounds of cheese to make mac-and-cheese for dinner, and we could also call this 432/1,000 pounds of cheese to make mac-and-cheese for dinner. Round the amount of cheese to the nearest tenth. So the amount of cheese once again is 0.432 pounds and just remember the places here. This is 4/10, so that's the tenths place. ... Read More

Key Insights

• 🛝 Rounding involves determining whether to increase or decrease the value of a number based on the digit in a specific place.
• 👀 Rounding to the nearest tenth involves looking at the digit in the hundredths place.
• 👀 Rounding to the nearest hundredth involves looking at the digit in the thousandths place.
• 👀 Rounding to the nearest hour involves looking at the digit in the tenths place.
• 🛝 Rounding up implies increasing the value of the digit being rounded, while rounding down implies decreasing it.
• 🛝 Rounding to the nearest tenth, hundredth, or hour may be necessary in different real-life situations.
• ❓ Rounding can be represented as a fraction or decimal.

Questions & Answers

Q: How do you round a number to the nearest tenth?

To round a number to the nearest tenth, look at the digit in the hundredths place. If it is five or greater, round up the tenths place. If it is less than five, round down the tenths place.

Q: How do you round a number to the nearest hundredth?

To round a number to the nearest hundredth, look at the digit in the thousandths place. If it is five or greater, round up the hundredths place. If it is less than five, round down the hundredths place.

Q: How do you round a number to the nearest hour?

To round a number to the nearest hour, look at the digit in the tenths place. If it is five or greater, round up the ones place (hours). If it is less than five, round down the ones place (hours).

Q: Can you round 2.197 to the nearest hundredth?

Yes, to round 2.197 to the nearest hundredth, the number is rounded up to 2.20. This means it is 2.20 or 2.2 when written without the trailing zeros.

Summary & Key Takeaways

• The video explains how to round numbers to the nearest tenth and demonstrates the process using examples.

• It also covers rounding to the nearest hundredth with a detailed example calculation.

• The final part of the video focuses on rounding to the nearest hour and provides an example for this type of rounding as well.