A strategy for multiplying

Multiplying using the Grid Method

Partition each number first 24 x 35= 20 + 4 30 + 5 X 20 4 30 5

24 x 35= X 20 4 30 5

24 x 35= X 20 4 30 5 100

24 x 35= X 20 4 30 600 5 100

24 x 35= X 20 4 30 600 120 5 100

24 x 35= X 20 4 30 600 120 5 100 25 7 2 + 1 5

24 x 35= X 20 4 30 600 120 5 100 25 7 2 + 1 5 5

24 x 35= X 20 4 30 600 120 5 100 25 7 2 + 1 5 4 5

24 x 35= X 20 4 30 600 120 5 100 25 7 2 + 1 5 8 4 5

27 x 4 = ? 36 x 3 = ? X 3 30 90 6 18 = 108 X 4 20 80 7 28 = 108

A strategy for dividing…

…using the ‘chunking’ method

84 ÷ 6 = 14 14 6 84 we know 10 x 6 60 24 we know 4 x 6 24

192 ÷ 8 = 24 24 8 192 we know 10 x 8 80 112 we know 10 x 8 80 32 we know 4 x 8 32

How can we apply our skills

L.O. To identify and use appropriate operations to solve word problems. Success Criteria I understand the different vocabulary for multiplication and division. I can use RUCSAC to complete one step word problems. I can decide whether to use a mental or written method to find the answer. I can use a written method for calculations. All Blue plus: I can use RUCSAC to solve two step word problems. All Blue plus: I can use RUCSAC to solve complex multi-step word problems. I can check my answers using the inverse operation. Each lesson – a LO / a focus

Jack had £1000 to go on holiday Jack had £1000 to go on holiday. His hotel cost £55 a night all inclusive. He stayed for 2 weeks and had a great time. On his return he shared out the money he had left with his 5 children. How much money did they each receive?

X   X 50 5 10 4 500 50 200 20+ 770 500 50 55 x 14 = 200 20 +30 +200 1000 - 770= 770 800 1000

230 ÷ 5 = 46 46 5 230 we know 10 x 5 50 180 we know 30 x 5 150 30 we know 6 x 5 30

Check : £46 x £5 = £230 ???

Using the format we have practised, can you solve your word problems, Your challenge…… Using the format we have practised, can you solve your word problems, using RUCSAC? And check your answers!

L.O To identify and use appropriate operations to solve word problems. Success Criteria I understand the different vocabulary for multiplication and division. I can use RUCSAC to complete one step word problems. I can decide whether to use a mental or written method to find the answer. I can use a written method for calculations. All Blue plus: I can use RUCSAC to solve two step word problems. All Blue plus: I can use RUCSAC to solve complex multi-step word problems. I can check my answers using the inverse operation.