New
New
Represent 3-digit multiples of 10 in different ways
I can represent 3-digit multiples of 10 in different ways.
Lesson 6 of 10
New
New
- Year 3
Represent 3-digit multiples of 10 in different ways
I can represent 3-digit multiples of 10 in different ways.
Lesson details
Key learning points
- 3-digit multiples of ten can be expressed as a number of tens.
- 3-digit multiples of ten can be expressed as a number of hundreds and tens.
- The number of tens and the number of hundreds and tens are equivalent.
Keywords
Equal - Exactly the same amount or value.
Common misconception
Pupils should not be encouraged to think about 'adding a zero' to the 2-digit numbers.
Make careful use of the stem sentences and representations to make sure that pupils are clear that e.g. 12 tens is equal to 120.
This lesson provides the opportunity to link a number of tens with a 3-digit multiple of ten by saying that, for example, 14 tens is equal to 140. This then helps pupils to apply known facts to 20 to 3-digit multiples of ten.
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.Which one is not a complement to 100 ?
Which one is not a complement to 100 ?
35 + 65
45 + 55
Q2.What is the total of 17 + 83 ?
What is the total of 17 + 83 ?
Q3.Match the complements to 100
Match the complements to 100
Q4.What do you add to 69 to make 100 ?
What do you add to 69 to make 100 ?
Q5.There are 100 cakes to sell at the school fair. 24 cakes have already been sold. How many are left to sell?
There are 100 cakes to sell at the school fair. 24 cakes have already been sold. How many are left to sell?
Q6.Complete the sentence. When 2-digit numbers are complements to 100, the ones digits total and the tens digits total 90
Complete the sentence. When 2-digit numbers are complements to 100, the ones digits total and the tens digits total 90
Assessment exit quiz
6 Questions
Q1.The number of 10 p coins can be expressed as tens.
The number of 10 p coins can be expressed as tens.
Q2.Match the 3-digit number to the correct number of tens.
Match the 3-digit number to the correct number of tens.
Q3.Which equation shows one hundred and 3 more tens?
Which equation shows one hundred and 3 more tens?
100 + 20 = 120
100 + 40 = 140
Q4.What number is shown on the Gattegno chart?
What number is shown on the Gattegno chart?
Q5.What number is missing from the bar model?
What number is missing from the bar model?
Q6.Sort the values from the smallest to the largest.
Sort the values from the smallest to the largest.
