New
New
Year 3
Represent 3-digit multiples of 10 in different ways
I can represent 3-digit multiples of 10 in different ways.
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.
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.
Keywords
Equal - Exactly the same amount or value.
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 (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
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6 Questions
Q1.
Which one is not a complement to 100 ?
35 + 65
45 + 55
Q2.
What is the total of 17 + 83 ?
Q3.
Match the compliments to 100.
85
73
61
59
47
Q4.
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?
Q6.
Complete the sentence. When 2-digit numbers are complements to 100, the ones digits total and the tens digits total 90
Exit quiz
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6 Questions
Q1.
The number of 10 p coins can be expressed as tens.
Q2.
Match the 3-digit number to the correct number of tens.
12 tens
16 tens
17 tens
10 tens
11 tens
Q3.
Which equation shows one hundred and 3 more tens?
100 + 20 = 120
100 + 40 = 140
Q4.
What number is shown on the Gattegno chart?
Q5.
What number is missing from the bar model?
Q6.
Sort the values from the smallest to the largest.
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