How to Help Your Child with Maths INSPIRE 5KW

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 Make it real: Do I have enough money? What change should I get? Which is the best value? What time will it be in 25 minutes? If we leave now will we catch the train, bus, cinema… 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 Bonds to 10 and 100 Partitioning = = = = 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… = If you finish early, you can practice by using the number cards on your desks, turn over 2.

What methods do we use? Written methods –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 three different written forms are: Expanded Method

Addition in Key Stage 2 Shorter Method

Addition in Key Stage 2 The Compact Method

Addition in Key Stage 2 Carrying as part of the Compact Method Notice the carry written 101 under the line 1

Addition in Key Stage 2 Your turn…. Solve this calculation 65and this one

Addition in Key Stage 2 D ecimals “Decimals Don’t Dance!” The decimal point stays in the same place  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 =

Subtraction in Key Stage 2 Expanded method

Subtraction in Key Stage 2 Shorter method

Subtraction in Key Stage 2 Compact method

Subtraction in Key Stage 2 Common problems Children will often say = 5 so ask them to do a concrete check: ‘I have 3 pieces of fruit. Can you take away 8 of them?’

Subtraction in Key Stage 2 Common problems We talk about numbers and digits to make things clearer So 56 is the number… …but 5 and 6 are the digits So when writing down a subtraction, always put the bigger number on the top

Subtraction in Key Stage 2 Exchanging We don’t ‘borrow’ because we are never going to pay anything back Having exchanged, start the sum again: we can do = ‘6 tens - 2 tens is how many tens?’ rather than as children will write 40 5 By years 5 and 6 we expect children to select the best method, so for a vertical method is NOT best

Subtraction in Key Stage 2 Your turn! Choose the best method to solve these subtraction problems – you may be able to work out the answer in your head. a) = b) 243 – 39 = c) 386 – 293 =

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 Multip L ication) 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

Preparing for Multiplication Your turn: Use your white boards to multiply these numbers by x 10 = 23 x 10 = 37 x 10 = H T U

Multiplication in KS2 Grid Method 19 x

Multiplication in KS2 Grid Method 29 x 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 Method 47 x 6 6 How would you partition 47?

Multiplication in KS2 Grid Method 27 x x2= x2= x20 =

Multiplication in KS2 Grid method Your 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 They do this method in year 6, after they have a confident grasp of the grid method.

Division in KS2 Tables! Tables! Tables! How to rally robin Your turn: try it with 2, 5 and 10 x tables.

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! This presentation is available on our classblog… as is a more comprehensive version. Please come to see us with any questions