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      Addition and subtraction facts within 10

      Lesson details

      Learning outcome

      I can solve problems using known addition and subtraction facts within 10

      Key learning points

      1. We can visualise a problem to help us understand what it is asking.
      2. We can represent addition and subtraction facts using bar models and manipulatives.
      3. We can calculate using a range of strategies to solve addition and subtraction problems within 10

      Keywords

      • Visualise - To imagine a given problem before us in real life.

      • Represent - To communicate mathematical ideas through models.

      • Calculate - To choose one of the four operations to solve a problem.

      • Check - To evaluate working, ensuring our response provides an answer to the given problem.

      Common misconception

      Without correct representation, children may struggle to know what to calculate.

      If needed, provide support at this stage so that the structure of the mathematics is clear to children.

      Teacher tip

      'Visualise', 'represent', 'calculate' and 'check' provides a memorable process children can undertake when solving any given problem. Visualisation of the problem is the key here as if children cannot 'see' the maths in the real world, they cannot accurately represent it.

      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 near double is the representation showing?

      An image in a quiz
      Correct answer: 1 + 1
      Correct answer: 2 + 2
      2 + 1

      Q2.
      Jacob rolled two dice. He rolled a near double. Which of these could he have rolled?

      An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz

      Q3.
      What is the missing number in this bar model?

      An image in a quiz
      6
      Correct answer: 5
      4
      3

      Q4.
      Which of these double facts would help to solve this near-double problem? 4 + 3 = ?

      Correct answer: 4 + 4
      5 + 5
      Correct answer: 3 + 3
      1 + 1

      Q5.
      Sam had 3 toy trains. Jacob had 4 toy trains. How many trains did they have in total.

      An image in a quiz
      5
      6
      Correct answer: 7
      8

      Q6.
      Jacob had 9 candles on his birthday cake. With his first blow he managed to blow out 5. How many candles are still lit?

      Correct Answer: 4, four

      6 Questions

      Q1.
      Which representation matches the bar model?

      An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz
      An image in a quiz

      Q2.
      Which representation matches Sam's statement.

      An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz
      An image in a quiz
      An image in a quiz

      Q3.
      The representation matches with which question?

      An image in a quiz
      There were 5. 3 more cars arrived. How many cars are in the carpark now?
      Correct answer: There were 5. 4 more cars arrived. How many cars are in the carpark now?
      There were 4. 3 more cars arrived. How many cars are in the carpark now?

      Q4.
      There were 5 birds in the tree. 3 of them flew away. How many birds are left in the tree?

      Correct Answer: 2, two

      Q5.
      Sam had 6 pounds. He spent 4 pound on a new book. How much money does he have left? What would the best strategy be?

      An image in a quiz
      Use a near double
      Use a number line and count backwards in ones
      Correct answer: Use knowledge of consecutive even numbers

      Q6.
      Sam has 4 cats and 3 dogs. How many animals does Sam have altogether? What would the best strategy be?

      An image in a quiz
      Correct answer: Use a near double
      Use a number line and count backwards in ones
      Use knowledge of consecutive even numbers

      To help you plan your 1 maths lesson on: Addition and subtraction facts within 10, download all teaching resources for free and adapt to suit your pupils' needs...