Written Calculation Methods
Download
Report
Transcript Written Calculation Methods
Key Stage 2
Years 3 - 6
• Where does it come from?
• Useful documents
Knowledge, understanding and practical application of:
Compare and order numbers up to 100
Place value of numbers up to 100
Bonds (+ and -) to 20 and related facts to 100
Relationship between + and -, X and ÷
Number sentences with symbols including =
multiplication and division facts for 2, 5 and 10
times tables
Application to solve problems in different contexts
Expanded method
Up to 3 digits add 3 digits with answers up to 500
Moving from the expanded to contracted method
Three digits add three digits, answers in thousands
Adding more than two numbers
Adding decimals
Range of numbers
Carrying more than ‘one’
When secure in understanding of subtraction move to
columnar method
No exchange needed, expanded then contracted
Simple exchange, expanded then contracted
Exchanging through zero place holders
Using a range of numbers and contexts
Continue to consider most appropriate and efficient
method
Times tables – 2,5, 10, 3, 4 and 8
Partitioning, using a grid and expanded column
methods
Up to 3 digits by 1 digit
Times Tables – all up to 12x
Grid and expanded methods
Expanded column method by end of year
Up to 3 digits X by 1 digit and 2 digits X 2 digits
Totals less than 1000
Moving to contracted method
Up to 4 digits x by 2 digits
Multiplying decimal numbers by whole numbers
Times tables – 2,5, 10, 3, 4 and 8
Subtracting on an empty number line with
increasingly large number using multiples in jumps
When confident in repeated subtraction and have a
secure understanding of division move to long and
short division.
Long division continues model of subtraction
Exposure to long division aids understanding later
Short division learnt alongside long division
Times Tables (and divisions) – all up to 12x
Long method modelled to reinforce division process.
Either long or short method used
With remainders
Continue to use short division to divide up to 4 digits
by 1 digit
Interpret remainders as fractions or decimals
Dividing decimal numbers
Short division when dividing by 1 digit
Long division when dividing by 2 digits
Using zero place holders to create a decimal remainder
Number problems and problems
Word problems
Arithmetic tests