1. Word cloud

120 seconds

What is the definition of rounding?

2. Slide

60 seconds

Rounding is a way of changing a number to make it easier to work with. You round a number by finding which number it is closest to. For example, 7 is closest to the number 8, so 7 rounded is 8.

What is Rounding?

3. Slide

60 seconds

Rounding: The process of finding an approximate value of a number by replacing it with the closest multiple of a given number. Place Value: The value of a digit based on its position in a number. Estimation: A rough calculation or judgment of the value, number, quantity, or extent of something.

Concepts:

4. Slide

60 seconds

The concept of rounding dates back to the ancient Babylonians, who used a base-60 system for counting and mathematics. The traditional rounding rules of The term 'rounding' was first used by mathematician, Carl Friedrich Gauss, in 1794 when he wrote about a 'rounding off of numbers.'

Did you know?

5. Open question

180 seconds

Work together in pairs: What is the difference between rounding to the nearest ten and rounding to the nearest hundred?

6. Personalised Feedback

360 seconds

If you have 28 apples and you want to round it to the nearest 10, how many apples would you have?

7. Open question

180 seconds

Work together in pairs: What is the main difference between 'round up' and 'round down'?

8. Drawings

450 seconds

Brain break: Draw a magical gorilla who can fly and shoot rainbows out of its belly button

9. Poll

60 seconds

What is 27 rounded to the nearest ten?

- 20
- 25
- 30
- 35

10. Poll

60 seconds

What is 146 rounded to the nearest hundred?

- 200
- 140
- 100
- 150

11. Poll

60 seconds

What is 83 rounded to the nearest five?

- 85
- 90
- 80
- 75

12. Poll

60 seconds

What is 1.7 rounded to the nearest whole number?

- 4
- 2
- 1
- 3

13. Poll

60 seconds

What is 3.14 rounded to one decimal place?

- 2.9
- 3.1
- 3.0
- 4.0

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