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St Mary's C of E Primary School

Credenhill, Hereford

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Here are your animal Quick Maths sheets. Reminder - try to do a day's worth in 5 mins, all correct, before moving on to the next day. If you are lucky enough to finish Knight - why not have a go at designing the next sheet (so another K - or start with letter L). If you design a sheet, photograph it and send it to Miss Taft, it can then be sent to other children to have a go. Make sure you provide an answer sheet too! frown

Autumn Term 

PLACE VALUE: We revise the number system up to 10, 000 and then go beyond to learn...

1) What  an amount of any number look like, especially with large amounts...10,000  100,000 and 1,000,000.
Do you remember how we made a tower of 10,000 cubes last year?


This is an ART exhibition made of of 10,000 plastic toy soldiers. Can you find other pictures of what 10,000 looks like?


2) How to say a large number accurately and where do the digits belong when we place them in a place value table?
interactive maths worksheet

You will find our place value chart grows wider as the numbers increase.
PARENTS: If we have a number... 53,246    we are thinking about DIGITS and how each digit represents a value.
e.g.The value of the digit 3 is 3000. Here, 3 is not a 'number' but a 'digit'. Wherever digits are positioned in the sequencec define what the number is. The number 3000 is much larger than the number 3..
digit 5 = number 50,000 (5 lots of 10,000)   
digit 3 = number 3000 (3 lots of 1000)   
digit 2 = number 200 (2 lots of 100)   
digit 4 = number 40  (4 lots of 10)   
digit 6 = number 6 (6 lots of 1)

50,000 + 3000 + 200 + 40 + 6 = 53,246


This is called a 'Gattegno' chart and is another useful way to read numbers and how they are partitioned. 

3) Compare which is...   more >   less <    equal =

4) Round up and down


5) Roman Numeral system up to 1000

I love this game... it starts off easy and grows gradually harder with each level. There is also puzzle pieces of buildings to make!
Quiz yourself on these and see if you can count like a roman!


6) Negative numbers - the pdf below is a an exampe of the kinds of questions we work on. We talk about the rise and fall in temperatures and what is the difference between temperatures. Notice how the temperature drops below Zero degrees during the Winter. Perhaps there is a thermometer on your freezer at home or on the car dashboard. For a bigger challenge, think about what it means to go below Zero pounds or pence in a bank account and what being 'overdrawn' means.


Add and Subtract

We very much focus on embedding the 'inverse' relationship between adition and subtraction. Addition and subtraction questions are not presented in the usual way


eg. 3842 = _____   - 117

Firstly, notice the unusual position of the = sign. This symbol means 'the same as' - not 'the answer'. When faced with a question like this, children's brains automatically tend to swap the figures into something they prefer...

3842 - 117 = 


So how do we fix this? Here is one example. We use Place Value counters to physically build the amounts and re-think, 'How much was there before the 117 was subtracted?' The children all have these counters on their tables to make this model. 
How to solve a complex question about subtraction

Another picture which helps to fix this tricky question is the yellow box on the bottom right -  it's called a 'Bar Model'. It is an extremely good way to show how adding two of the amounts will help solve the missing amount. So instead of working out a subtraction, the problem can be solved with an addition. 


By hitting questions like this slowly, carefully and with lots of discussion - children's understanding becomes deeper and more secure. In times gone by, children were given lists of sums to do which helped with a procedure of written subtractions, but did not help with understanding deeper concepts or connections with addition. When the numbers were then put into a real life problem, children struggled rather than have this deep understanding which could be applied. 


Up to now, the children will have worked with tally charts, bar models, tables and pictograms. We continue to work with these graphs but introduce a Line Graph. Typically, the children start by taking the temperature of the room or the outside weather every hour and plot these onto their graph.

One of the areas many children struggle with is reading the scale - assuming the scale counts up in ones, so we always check how to count the spaces between the numbers on the scale carefully. Another problem is drawing their own scale on a graph - equal intervals between numbers on he axis are needed. We check each others labelling to see that each number is accurately spaced. Geometry skills are needed too. Have a sharp pencil, draw exactly on the line, use a ruler. Many children struggle to hold a ruler and draw a straight line accurately, so I do give a strong focus on those skills too. Labelling the axis with a name and a title are often forgotton. I shouldn't have to ask, 'What is this axis representing?' because a label should be on both axis to tell me, as well as an overall title for what the graph is about. Finally, interpreting the information, and fathoming out the story behind a graph is studied.


eg. Starter questions...

1. what was the temperature at 3pm? (drawing a straight/parallel line up and across AND converting 3pm into 24hr clock which is also a good way to help revise that skill!)


then more challenging questions such as ..

2. Over which period did the temperature fall the quickest? (So needing to notice the steepest line over a short time... there may be two or three drops in temperature but a steeper line on a graph can show which was the quickest) 


and finally providing logic and opinion of the situation, interpreting the story behind the line graph,,,
3. Why do you think this happened? (the school was closing - the heating went off - the door was left open etc) 


Take a good look at this graph - it's nicely illustrated (which is not usually the case) and gives you a sense of the story behind the line.