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      Composition of seven-digit numbers

      Lesson details

      Learning outcome

      I can explain how a 7-digit number can be composed.

      Key learning points

      1. Known facts and unitising can be applied when partitioning 7-digit numbers.
      2. If the missing part is an addend then the other addend is subtracted from the sum
      3. If the missing part is the subtrahend then the difference is subtracted from the minuend

      Keywords

      • Addend - An addend is a number added to another to give a sum. The addends are the parts.

      • Minuend - The first number in a subtraction is known as the minuend. It is the whole amount.

      • Subtrahend - The number that is to be subtracted. The second number in a subtraction.

      Common misconception

      Children may find it difficult to comprehend that e.g. 1,200,000 may have a digit '2' in the one hundred thousands place but is actually composed of 12 hundred thousands.

      Even though the digit in the 100,000s place is a 2, the number 1,200,000 is composed of 12 hundred thousands because one million is composed of 10 hundred thousands.

      Teacher tip

      Use a place value chart to support children to see the composition of numbers.

      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 is the value of the digit ‘3’ in 13,405?

      3
      30
      300
      Correct answer: 3,000
      30,000

      Q2.
      What is the digit ‘1’ worth in 13,405?

      10
      100
      1,000
      Correct answer: 10,000
      100,000

      Q3.
      Complete the sentence: 23,406 is composed of ten thousands.

      Correct Answer: 2, two

      Q4.
      Complete the missing number. 23,406 = 20,000 + + 400 + 6

      Correct Answer: 3,000, 3000

      Q5.
      Aisha scores 2,000 points in a game. Lucas scores 700 points. How many more points does Aisha have? Aisha has more points than Lucas

      Correct Answer: 1,300, 1300

      Q6.
      Aisha and Lucas score a total of 5,000 points in a game. Lucas scores 3,500 points. How many points does Aisha score? Aisha scores points.

      Correct Answer: 1,500, 1500

      6 Questions

      Q1.
      One million is composed of:

      100 thousands
      Correct answer: 1,000 thousands
      10 hundreds
      100 hundreds
      Correct answer: 10 one-hundred thousands

      Q2.
      Match the expressions that have the same value.

      Correct Answer:1,000,000,1,000 thousands

      1,000 thousands

      Correct Answer:100,000,100 thousands

      100 thousands

      Correct Answer:10,000,100 hundreds

      100 hundreds

      Correct Answer:1,000,10 hundreds

      10 hundreds

      Correct Answer:100,10 tens

      10 tens

      Q3.
      1,230,902 is composed of hundred thousands.

      Correct Answer: 12, twelve

      Q4.
      Complete: 1,230,902 = + 900 + 2

      Correct Answer: 1,230,000

      Q5.
      Lucas and Aisha play a game. In total they have scored 2,000,000 points. 680,000 points have been scored by Lucas. How many points did Aisha score?

      Correct Answer: 1,320,000, 1320000

      Q6.
      In his game, Lucas has won 8,000,000 points. He spends some of his points buying new building resources. He has 5,900,000 points left. How many points did he spend?

      Correct Answer: 2,100,000, 2100000

      To help you plan your 6 maths lesson on: Composition of seven-digit numbers, download all teaching resources for free and adapt to suit your pupils' needs...