(Draft) of Strategies and Methods Multiplication – Year 3 Year 4 Counting in Counting in steps (sequences) steps (‘clever’ counting) Count in 2s, 3s, 4s, 5s, 8s and 10s Count in 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 25s, 50s, 100s and 1000s 2 3 4 5 6 7 8 9 10 25 25 25 25 25 25 25 25 25 25 25 25 25 1 12 13 14 15 16 17 18 19 20 11 21 22 23 24 25 26 27 28 29 30 Doubling and halving 32 33 34 35 36 37 38 39 40 31 Find doubles to double 100 and beyond using partitioning e.g. double 126 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 72 73 74 75 76 77 78 79 80 71 Multiplication 81 82 83 84 85 86 87 88 89 90 Begin to double amounts of money e.g. £3·50 doubled is £7 91 92 93 94 95 96 97 98 99 100 Mental 4 4 4 4 4 4 Use doubling as a strategy in multiplying by 2, 4 and 8 e.g. 34 × 4 is double 34 (68) doubled again = 136
Mental Multiplication of Strategies and Methods – Multiplication (Draft) Year 3 Year 4 Counting in steps (‘clever’ counting) Counting in steps (sequences) Count in 2s, 3s, 4s, 5s, 8s and 10s Count in 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 25s, 50s, 100s and 1000s 1 2 3 4 5 6 7 8 9 10 25 25 25 25 25 25 25 25 25 25 25 25 25 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Doubling and halving 31 32 33 34 35 36 37 38 39 40 Find doubles to double 100 and beyond using partitioning 41 42 43 44 45 46 47 48 49 50 e.g. double 126 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 Begin to double amounts of money 91 92 93 94 95 96 97 98 99 100 e.g. £3·50 doubled is £7 4 4 4 4 4 4 Use doubling as a strategy in multiplying by 2, 4 and 8 e.g. 34 × 4 is double 34 (68) doubled again = 136