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Progression in Teaching Multiplication and Division (NNS recommendations) Prior Experience Required Before children are introduced to multiplication and division they should: Be able to count securely Understand basic addition and subtraction Be able to form groupings I can count to one hundred. Listen to me. . . 1, 2, 3 , 4 . . .99, 100!!! Two add three makes five! I have grouped my counters into threes! Stage 1: Mental Counting and Counting Objects (Years 2 and 3) Let’s all count in multiples of two. Are you ready? Two, four, six . . . Altogether I have 123, 456, 789, 1011 12 counters! Stage 2: Early mental calculations and learning number facts with recording. (Years 2 and 3) Gemma W What is six times 2? 12 Yes, that’s right! 2 x 6 = 12 6 x 2 = 12 12 ÷ 2 = 6 12 ÷ 6 = 2 Stage 3: Working with larger numbers and informal jottings (Years 2, 3 and 4) 24 x 8. Let’s see that’s . . . 20 x 8 which is 2 x 8 x 10 . . . 160. 4 x 8 is 32. So 24 x 8 is 160 + 32 which is 60 + 32 + 100 which is 192! 24 x 8 . Let’s see. . . 6 x 8 = 48 so double 6 gives 12 x 8, so that’s 96. Then double 12 is 24 so double 96. Double 100 is 200 take away double 4 which is 8 gives 192! Stage 4: Non-standard expanded written methods begin in Year 4, first with whole numbers. Grid method for 38 x 7 Expanded vertical recording 38 x 7 210 (30 x 7) 56 (8 x 7) 266 x 30 8 7 210 56 266 Stage 5: Standard written methods for whole numbers then for decimals (beginning in Year 4 and extending through to Year 6.) 203 x 57 10150 1421 11571 458 ÷3 by chunking 3 4158 458 - 300 (100 x 3) 23.75 x 3 Compact short multiplication 158 - 150 (50 x 3) 6 (2 x 3) 2 Answer 152 rem 2 71.25 Compact short multiplication of decimals 28 15 432 8 Compact long multiplication 152 rem 2 300 132 120 12 Answer 28 rem 12 Compact long multiplication Stage 6: Use of calculators (beginning in Year 5) We’ve measured the playground and it is 23.75 metres long and 18.55 metres wide. What is the area of the playground? It is 23.75 metres times 18.55 metres. I’ve worked it out on my calculator. It’s 440.56 square metres to the nearest centimetre!