# A strategy for multiplying

## Presentation on theme: "A strategy for multiplying"— Presentation transcript:

A strategy for multiplying

Multiplying using the Grid Method

Partition each number first
24 x 35= 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 = ? x 3 = ? X = 108 X = 108

A strategy for dividing…

…using the ‘chunking’ method

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

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

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 = 770 800 1000

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

Check : £46 x £5 = £230 ???

Using the format we have practised, can you solve your word problems,