Transcript Parklands Junior School

Parklands Junior School
Maths Workshop - 2015
Contents

Methods of calculation

Facts and general knowledge

Using and applying

My Maths
New Primary Maths Curriculum
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
Clear expectations around written methods of
calculation in addition to mental methods.
Children are expected to know their times tables up to
12 x 12.
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More requirement for children to know about fractions
and decimals.
Financial skills have been reinforced i.e money skills,
working with percentages.
Less reliance on calculators.
Addition
Standard method
Quick and straightforward.
Doesn't necessarily go
through place value and
children don't understand
the values of digits.
Children forget to add on
the small 1
Addition
Addition using partitioning
YOUR TURN!
1753 + 853 =
HTU + HTU
546+478
500
40
500 + 400 = 900
40 + 70 = 110
6 + 8 = 14
6
400
70
8
Now add all 3 numbers
together:
900 + 110 + 14 = 1024
Addition
1753 + 853
1000
700 + 800 = 1500
50 + 50 = 100
3+3=6
1000 + 1500 + 100 + 6 = 2606
Subtraction
Number line
Used more in lower school to allow children to understand that
subtraction means counting up.
Used more effectively in the context of time or money.
Sam leaves home at 7.50am and arrives to school at 8.37am. How long
was his journey?
10mins
7.50
30mins
8.00
10mins + 30mins + 7mins = 47mins
7mins
8.30
8.37
Subtraction
Number line
Kate goes to the supermarket with £50.00. She buys
some items and receives £27.25 change. How much did
she spend?
Subtraction
Number line
Kate goes to the supermarket with £50.00. She buys
some items and receives £27.25 change. How much did
she spend?
+£0.75
+£20.00
+£2.00
£27.25
£28.00
£30.00
£20.00 + £2.00 + £0.75 = £22.75
£50.00
Subtraction
Standard method
Quick and
straightforward
Can be difficult when
doing a problem such
as: 4000 – 781.
Number line would
then be more
appropriate
Subtraction
Decomposition (expanded subtraction):
782 – 467 =
YOUR TURN!
2674 - 391 =
300 + 10 + 5 = 315
Subtraction
2674 - 391 =
500
170
2000 600 70 4
300 90 1 2000
200
80
3
2000 + 200 + 80 + 3 = 2283
Multiplication
Standard method
Multiplication
Ladder method:
565 x 7 =
565
x7
3500 (500 x 7)
420 (60 x 7)
+ (7x5)
35
3955
Children have a better
understanding of place
value
Multiplication
Grid method:
When multiplying pairs of 2 digit numbers or more.
45 x 37
X
30
7
40
1200
280
5
150
35
1480
185 +
1665
Multiplication
Grid method:
Your turn
67 x 45
X
60
7
40
5
Multiplication
Grid method:
Your turn
67 x 45
X
40
5
60
2400
300
7
280
35
2700
315 +
3015
Multiplication
423 X 36
Division
Standard - Short division
Division
Chunking:
Involves repeated multiplication mentally
YOUR TURN!
173 ÷ 5 =
Division
Common facts
Measuring conversions
Using and applying
Using your mathematical skills and applying them
to problem solving.
Magic square;
Use the numbers 1-9 to fill in this
square. Each row, column and
diagonal must add up to 15.
Using and applying
In this maze there are numbers in each of the cells. You go through
adding all the numbers that you pass. You may not go through any cell
more than once.
Can you find a way through in which the numbers add to exactly 100?
Questions?
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