How to Help Your Child with Maths

INSPIRE 6AV

This morning?

“They do it all differently these days!”

Bridging the gap

They are teaching you this morning!

What is important?

• A strong foundation in the basics– Just like the foundations of a house, if

the basics aren’t solid then cracks will appear

– So, keep returning to the fundamentals– Your child should not just be familiar

with the basics, but fluent– Don’t be afraid to do the old drills and

skills

Anything else important?

• Multiplication tables• Rapid and accurate addition and

subtraction• Telling the time, analogue and digital

• Drip, drip, drip….

Anything else important?

• A sound understanding of place value is very important

Not millions Th H T U . 1/10 1/100

So what are the basics?

• Addition• Subtraction• Multiplication• Division• Problem solving

Some practical ideas…Times tables in the car…drill and quickfire

Real life, Do I have enough money?What change should I get?Which is the best value?

What time will it be in 25 minutes?

Cooking, weighing, measuring.Do I have enough rice to make this dish?

What methods do we use?

•Mental first!• To equip children for real life, their mental

maths skills are the most important.

• Speeding up the accuracy and fluency of mental methods will help with written methods later.

What methods do we use?

• Mental strategies ( a small selection)• Bonds to 10 and 100

• Partitioning. 24 + 43 = 20 + 40 = 60 4 + 3 = 7 60 + 7 = 67

What methods do we use?

Your turn….• Play I say, you say with your bonds to 10, then

100.

then….

• Solve this calculation by partitioning…• 54 + 32 =

• If you finish early, you can practise by using the number cards on your desks, turn over 2.

What methods do we use?

• But they will soon use more written methods in their Mathematics– Using a variety of methods– Building towards a standard method

– They often follow the path from an expanded method to a shorter method and finally a compact

method

Addition in Key Stage 2

• The Compact Method

75 +23 98

Addition in Key Stage 2

• Carrying

• The Compact Method

78 +23 Notice the carry

written 101 under the line

Addition in Key Stage 2

Your turn….

Solve this calculation 65 + 78

Addition in Key Stage 2

• Decimals “Decimals Don’t Dance!”

• The decimal point stays in the same place

71.3 71.3 2.25 2.25

Decimals should not be written in the square of a book as they have no place value. They should be written on a line 1 2.4

Addition in Key Stage 2

Your turn….

Line up the decimals to solve this calculation using the compact method

43.2 + 12.25 =

Preparing for Multiplication

• Children must know their tables - fluently

• ? X 5 = 15• 3 x ? = 15• 3 x 5 = ?

• Mad Minutes….your turn!

Preparing for Multiplication

• Place value

Th H T U 1/10 1/100

• Multiplying by 10

Move each digit one place to H T U That leaves

the left (remember MultipLication) 1 7 a space in

1 7 to which we put a zero to hold the place

Preparing for Multiplication

• Common Errors– Why don’t we say ‘add a zero’ when

multiplying by 10?• 1.7 x 10 = 1.70 we have added a zero

but have not made any difference to the number

– Why do we need a zero at all?• This is 170 without a zero H T U which looks like 1 7 17

Multiplication in KS2

• Grid Method

19 x 6 10 9 60 6 60 54 + 54 114

Multiplication in KS2

• Grid Method29 x 6 20 9 120 6 120 54 +54

174

Knowing 2 x 6 = 12 is a basic fact

So 20 x 6 = 120 can be ‘grown’ from this basic fact

Multiplication in KS2

• Grid Method27 x 23 20 3 20 400 60 400 7 140 21 140 2x2=4 + 60 20x2=40 21 20 x20 = 400 621

Multiplication in KS2

Grid methodYour turn….22 x 14 =

Multiplication in KS2

• Shorter Vertical Method

19 write this first x 6 60 (10 x 6) 54 (9 x 6) 114

Division in KS2• Tables! Tables! Tables!

• How to rally robin

Your turn: try it with 2, 5 and 10 x tables.

Division in KS2• Tables! Tables! Tables!

• Chunking Method

43 ÷ 7 is written as 7 43

Division in KS2 7 43

-14 2 X 7 Keep it simple 29 -14 2 X 7 Use 1,2,5,10 times

tables for multiples of 7 and so on

Division in KS2 13 r 2

7 93 -70 10 X 7 23 Can we get 10 x 7s, 5 x 7s?

No -14 2 X 7 9 - 7 1 X 7 2

Division in KS2 Chunking method

Your turn

78

Remember we are taking away, lots of 5….

5

Stand up bingo

Write any 5 of the following numbers on your

boards.

0, 2, 4, 5, 6, 8, 10, 12, 14, 15, 20, 22, 24, 26, 28, 30

Thank you for coming!

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as is a more comprehensive version.

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