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MathsYear 5Autumn Block 1 (Place Value)03 Round to 10, 100 and 1,000 › Round to 10, 100 and 1,000 Year 5 Place Value Learning Video Clip

# Round to 10, 100 and 1,000 Year 5 Place Value Learning Video Clip ## Step 3: Round to 10, 100 and 1,000 Year 5 Place Value Learning Video Clip

Buzz and Reena are astronauts travelling around the universe. They need to use their knowledge of rounding to the nearest 10, 100 and 1,000 to help them get to their next destination and make it through an asteroid storm!

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1. Who do you think is correct? Discuss who has correctly rounded a 4-digit number to the nearest thousand.
2. Help Buzz and Reena to understand rounding by rounding the diameters of Mercury and Mars to the nearest thousand, hundred or ten kilometres. Discuss how to answer each question using knowledge of place value.
3. Which do you think is the most useful way of rounding these numbers? Discuss the benefits of rounding to different amounts (for example, rounding to the nearest 10 can give a more accurate answer). This question is open-ended for the children to explore.
4. The space probe has rounded the number to the nearest hundred/ten asteroids. How many asteroids could there have been? Discuss rounding the number to the nearest hundred, and how the number is similar or different when rounded to the nearest 10. What is the range for rounding to the nearest hundred and rounding to the nearest ten?
5. Round the minimum and maximum temperatures to the nearest ten and nearest hundred. Discuss the strategies needed to round the given numbers, including a negative number so that children understand that rounding follows the same principles for negative and positive numbers.
6. Which rounding is the most useful? Discuss the benefits of rounding to different amounts and whether these numbers could have been rounded to the nearest thousand. This question is open-ended for the children to explore.

Optional discussion points:

What do you understand by the term diameter?

What other large numbers to do with Space could be rounded? Which place value should we round them to?

National Curriculum Objectives

Mathematics Year 5: (5N2) Read, write, order and compare numbers to at least 1 000 000 and determine the value of each digit

Mathematics Year 5: (5N4) Round any number up to 1 000 000 to the nearest 10, 100, 1000, 10 000 and 100 000

Mathematics Year 5: (5N6) Solve number problems and practical problems that involve 5N1 - 5N5

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