Unit 8 – Numbers and patterns
3 The factors of 6 are 1, 2, 3 and 6 because 6 can be divided by each of the numbers with no remainders. We can also write: 2 × 3 = 6 3 × 2 = 6 1 × 6 = 6 6 × 1 = 6 What do you notice about multiplying by 1? What do you notice about the order of the factors in the number sentences?
1 Colour squares on grid paper to show all the possible arrays for these numbers: 5, 8, 9, 10 and 12. List all the factors for each number.
2 True or false? Explain or show your thinking.
(a) 3 is a factor of 25. (b) 24 is a multiple of 4.
(c) 3 and 9 are both factors of 27. (d) 30 is a multiple of 5 and also of 6.
(e) The factors of 15 are 1, 2, 3, 5 and 15.
Work in small teams. Your teacher will roll two 1–6 dice. Use cubes or counters to show the array and say the multiple. Score 5 points if your team is correct. Score an extra 5 points each time if you can make other array for the same multiple but with different factors. Say all the factors you have found. Which team has the most points after eight goes?
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04/05/2022 15:50
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