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Download Progression in multiplication - Geoffrey Field Infant School
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+ −×÷ i Progression in Multiplication Whitley Excellence Cluster May 2014 + −×÷ i Multiplication - Reception • Count in 2s 2 4 6 8 10 1 Five pairs of socks. Ten socks 2 3 Count on in 10s (and back) from a given tens number 5 6 7 8 9 10 Point to a number track, saying every other number aloud. 40 • 4 50 30 20 Multiplication – Year 1 • + −×÷ i Count in 2s, 10s and 5s 2 4 6 8 10 Double 4 is 8 How many gloves in 3 pairs? • Understand doubling Multiplication – Year 2 • + −×÷ i Count in 2s, 10s and 5s, recording on a number line 5 + 5 + 5 + 5 = 20 5 x 4 = 20 5 multiplied by 4 is 20 0 • 5 10 15 20 2 hops of 4 Introducing arrays 4 4 x 2 = 8 2 x 4 = 8 4 8 0 2 2 2 4 hops of 2 2 Multiplication – Year 2 • + −×÷ i Count in 2s, 10s and 5s, recording on a number line 5 + 5 + 5 + 5 = 20 Five 4 times 5 x 4 = 20 5 multiplied by 4 is 20 0 • 5 10 15 20 2 hops of 4 Introducing arrays 4 4 x 2 = 8 2 x 4 = 8 4 8 0 2 2 2 4 hops of 2 2 Multiplication – Year 2 • • Arrays 8 x 5 = 40 5 x 8 = 40 • 8 5 16 10 24 15 Count in 2s, 10s, 5s, 3s and 4s, recording on a number line Begin to recognise these as tables facts 0 Use a number line to show answers 20 32 25 • 4 8 12 10 and double 8 18 35 16 Use partitioning to double numbers Double 18 Double 40 30 + −×÷ i 40 10 + 8 20 + 16 = 36 Multiplication – Year 3 • • Using arrays to show partitioning when multiplying TU x U 3 7 10 x 3 = 30 7 x 3 = 21 Leading to the simple grid method for TU x U 30 + 21 = 51 • Informal jottings supporting mental multiplication using partitioning 17 x 3 = (10 x 3) + (7 x 3) 10 30 + 21 = 51 • + −×÷ i x 10 7 3 30 21 = 51 = 30 = 51 + 21 Start with ones 17 X3 2 1 (7x3) 3 0 (10x3) 51 Tables facts for 2x, 3x, 4x, 5x and 10x tables. Counting in 6s, 7s, 8s and 9s.