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      Convert from days to weeks and months to years

      Lesson details

      Learning outcome

      I can use knowledge of the units of time to convert from days to weeks and years to months.

      Key learning points

      1. There are 7 days in a week
      2. There are 12 months in a year
      3. There are between 28 and 31 days in a month

      Keywords

      • Day - Any 24 hour period.

      • Week - Any seven day time period.

      • Month - One of the 12 parts of the year.

      Common misconception

      Pupils will need to be able to count in steps of 7 and 12 to succeed in this lesson and have a good recall of the 7 and 12 times tables. Calculation errors will occur frequently if not.

      Consider pre-teaching pupils still insecure with this, and / or providing scaffolding such as a times tables grid.

      Teacher tip

      A double number line is explored as a means of conceptualising the conversion between days and weeks. This can also be used as a support or a scaffold for pupils during Practice tasks.

      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.
      How many days are there in one week? days.

      Correct Answer: 7, seven

      Q2.
      How many months are there in a year?

      Correct Answer: 12, twelve

      Q3.
      Select all the multiples of 7

      Correct answer: 70
      Correct answer: 21
      27
      47
      Correct answer: 49

      Q4.
      Select all the multiples of 12

      Correct answer: 120
      Correct answer: 48
      70
      37
      Correct answer: 60

      Q5.
      × 7 = 84

      Correct Answer: 12, twelve

      Q6.
      12 × = 60

      Correct Answer: 5, five

      6 Questions

      Q1.
      How many days are there in 3 weeks?

      Correct Answer: 21, twenty one

      Q2.
      How many months are there in 3 years?

      Correct Answer: 36, thirty six

      Q3.
      2 weeks and 3 days is the same as how many days?

      16
      Correct answer: 17
      18

      Q4.
      2 years and 3 months is the same as how many months?

      Correct answer: 27
      28
      29

      Q5.
      Order these durations from shortest to longest.

      1 - 34 days
      2 - 5 weeks
      3 - 36 days
      4 - 5 weeks and 2 days

      Q6.
      Order these durations from shortest to longest.

      1 - 47 months
      2 - 4 years
      3 - 49 months
      4 - 4 years and 2 months

      To help you plan your 4 maths lesson on: Convert from days to weeks and months to years, download all teaching resources for free and adapt to suit your pupils' needs...