New
New
Round a decimal number with hundredths to the nearest tenth
I can round a decimal number with hundredths to the nearest tenth
Lesson 6 of 10
New
New
- Year 5
Round a decimal number with hundredths to the nearest tenth
I can round a decimal number with hundredths to the nearest tenth
Lesson details
Key learning points
- Identify the next and previous tenths to the number being rounded
- Identify which tenth is nearest to the number being rounded
- If the value of the hundredths is 5 or greater then round up to the next tenth
- If the value of the hundredths is less than 5, ignore the hundredths and round down to the previous tenth
Keywords
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 misconception
When recording which multiple of 0.1 a number is nearest to, pupils may forget to include the ones.
Make sure pupils have plenty of opportunities to continue counting and rounding with multiples of 0.1 beyond one whole.
Ensure pupils build towards generalising for themselves that when rounding to a specific place value, you look at the value of the digit in the column to the right of the place value you are rounding to. Connect this to prior learning of rounding.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the missing number in the sequence?
What is the missing number in the sequence?
Q2.A is between which multiples of 1?
A is between which multiples of 1?
9 and 11
8 and 10
Q3.What is the previous multiple of one?
What is the previous multiple of one?
Q4.A number is between 2 and 3. It has less than 4 tenths. What numbers could it be?
A number is between 2 and 3. It has less than 4 tenths. What numbers could it be?
1.3
2.4
Q5.What is 7.4 rounded to the nearest multiple of one?
What is 7.4 rounded to the nearest multiple of one?
Q6.Match each number with the multiple of one it would be rounded to.
Match each number with the multiple of one it would be rounded to.
Assessment exit quiz
6 Questions
Q1.Tick the multiples of one tenth.
Tick the multiples of one tenth.
2.74
Q2.What are the nearest multiples of 0.1 that 12.45 sits between?
What are the nearest multiples of 0.1 that 12.45 sits between?
12 and 13
12.44 and 12.46
Q3.What is the next multiple of one tenth?
What is the next multiple of one tenth?
Q4.8.26 sits between the multiples of 0.1 8.2 and
8.26 sits between the multiples of 0.1 8.2 and
Q5.What is 6.53 rounded to the nearest multiple of 0.1?
What is 6.53 rounded to the nearest multiple of 0.1?
Q6.What is 46.03 rounded to the nearest multiple of 0.1?
What is 46.03 rounded to the nearest multiple of 0.1?
