KS2 · Maths · Year 5
Round a decimal number with hundredths to the nearest whole number
Use knowledge of decimals to solve problems in different contexts: length
Learn it. Recall it. Make it stick.
IllumED Slides
IllumED · 1/11
Your learning goal
I can round a decimal number with hundredths to the nearest whole number
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Round a decimal number with hundredths to the nearest whole number: slides adapted from the imported teaching text; recall questions created from its keywords, learning points and common mistakes. Self-check practice, with no automatic grading or XP. Answers stay on this page and are cleared when you leave.
Original teaching resources
The original illustrated PowerPoint is available as well as the IllumED text slides. It retains the publisher’s design and credits.
Download original PowerPoint ↓What you’ll learn
I can round a decimal number with hundredths to the nearest whole number
Key learning points
- Identify the next and previous whole numbers to the number being rounded.
- Identify which whole number is nearest to the number being rounded.
- If the value of the tenths is 5 or greater then round up to the next whole number.
- If the value of the tenths is less than 5, ignore the tenths and round down to the whole number.
- To round a number with hundredths to the nearest whole number, you only need to look at the tenths.
Words to know
- Multiple
- A multiple is the result of multiplying a number by an integer. For example 2 × 5 = 10 so 10 is a multiple of 2 and 5.
- Previous
- Something that comes before something else is known as the previous thing.
- Next
- Something that comes after something else is known as the next thing.
- Rounding
- Rounding means making a number simpler but keeping its value close to what it was.
Common mistakes
Pupils may mistake the previous multiple of one for example: previous multiple of 6.38 being 5.
Ensure pupils are given plenty of opportunities to place numbers on number lines, identifying the previous and next multiples of one.
For parents, carers and teachers
- Ensure you build towards pupils generalising for themselves and that they look at the column to the right of the place value they want to round towards. Rounding the same number to different place values can help with this.