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      Use different strategies to add multiples of 100

      Lesson details

      Learning outcome

      I can use different strategies to add multiples of 100

      Key learning points

      1. Known facts help us to add multiples of 100
      2. If 3 plus 2 is equal to 5 then 3 one-hundreds plus 2 one-hundreds is equal to 5 one-hundreds.
      3. 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.

      Teacher tip

      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).

      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.
      The place value counters can represent __________

      An image in a quiz
      Correct answer: Fourteen hundred
      Sixteen hundred
      One thousand and forty
      Correct answer: One thousand four hundred

      Q2.
      Which number is represented by the place value counters?

      An image in a quiz
      1,001
      1,010
      Correct answer: 1,100

      Q3.
      1,300 is composed of ...

      Correct answer: 13 hundreds
      1 thousand and 3 tens
      1,300 tens
      Correct answer: 1,300 ones

      Q4.
      What number is missing from the number track?

      An image in a quiz
      Correct Answer: 1,000, one thousand, 1000

      Q5.
      What number is missing from the number track?

      An image in a quiz
      Correct Answer: 1,500, 1500, one thousand five hundred

      Q6.
      1,500 can be composed of tens.

      Correct Answer: 150, one hundred and fifty

      6 Questions

      Q1.
      What is 100 more than 400?

      Correct Answer: 500

      Q2.
      400 + 400 =

      Correct Answer: 800

      Q3.
      Which two multiples of 100 could complete the equation? + = 800

      Correct answer: 300
      400
      Correct answer: 500
      600

      Q4.
      700 + = 1,000

      Correct Answer: 300

      Q5.
      Match each expression to its sum.

      Correct Answer:700 + 700 = ,1,400

      1,400

      Correct Answer:700 + 800 =,1,500

      1,500

      Correct Answer:900 + 300 =,1,200

      1,200

      Correct Answer:600 + 700 = ,1,300

      1,300

      Q6.
      What number is missing from this equation? 800 + 800 = 900 +

      Correct Answer: 700

      To help you plan your 4 maths lesson on: Use different strategies to add multiples of 100, download all teaching resources for free and adapt to suit your pupils' needs...