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Lesson 3 of 5
Use different strategies to add multiples of 100
I can use different strategies to add multiples of 100
Lesson 3 of 5
New
New
Use different strategies to add multiples of 100
I can use different strategies to add multiples of 100
Lesson details
Key learning points
- Known facts help us to add multiples of 100
- If 3 plus 2 is equal to 5 then 3 one-hundreds plus 2 one-hundreds is equal to 5 one-hundreds.
- Adding multiples of 100 can be represented in different ways.
Keywords
Multiple - A multiple is the result of multiplying a number by another whole number.
Common misconception
Pupils may initially find it tricky to use known facts to add multiples of 100
When explaining that we can use 3 ones + 6 ones = 9 ones to find 3 hundreds + 6 hundreds = ___, stress that the only thing that changes here is the noun.
Manipulatives such as place value counters and ten frames may help some pupils to visualise the addition of multiples of 100 Encourage pupils to use these to support their thinking and help them use known facts to work out answers to problems posed (e.g. 800 + 700 is equal to 800 + 200 + 500).
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
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6 Questions
Q1.The place value counters can represent __________
The place value counters can represent __________
Sixteen hundred
One thousand and forty
Q2.Which number is represented by the place value counters?
Which number is represented by the place value counters?
1,001
1,010
Q3.1,300 is composed of ...
1,300 is composed of ...
1 thousand and 3 tens
1,300 tens
Q4.What number is missing from the number track?
What number is missing from the number track?
Q5.What number is missing from the number track?
What number is missing from the number track?
Q6.1,500 can be composed of tens.
1,500 can be composed of tens.
Assessment exit quiz
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6 Questions
Q1.What is 100 more than 400?
What is 100 more than 400?
Q2.400 + 400 =
400 + 400 =
Q3.Which two multiples of 100 could complete the equation? + = 800
Which two multiples of 100 could complete the equation? + = 800
400
600
Q4.700 + = 1,000
700 + = 1,000
Q5.Match each expression to its sum.
Match each expression to its sum.
1,400
1,500
1,200
1,300
Q6.What number is missing from this equation? 800 + 800 = 900 +
What number is missing from this equation? 800 + 800 = 900 +