1. Year 5 and 6 Calculations Maths Information Session
Welcome
Multiplication (Grid Method)
Subtraction (Column & Number Line)
Division (Bus Stop, Chunking and Number Line)
Addition (Column)

2. Multiplication Grid Method Success Criteria Estimate
Example
16 X 37.4 =
Success Criteria
Estimate
Draw grid - what size?
Partition each number
Multiply the numbers
Put on correct zeros
Add vertical boxes in columns
Check against estimate

3. Multiplication
Now its your turn
2083 X 76 =
9 X 6.34 =
43 X 62 =

4. Subtraction Column Subtraction Example 1326 – 718.4 = Success Criteria
Put digit in correct column
Line up the decimal point
Write the - sign
Put the decimal point in answer box
Copy numbers correctly
Start at right
Borrow from the left if you need to
Watch out for the zeros!

5. Subtraction Number Line Example 7005 – 537 =
Ellie and Safaa will explain this method which is useful for money calculations

6. Subtraction
Have a go at these using either of the methods you have been shown.
2008 – =
2674 – =
689 – 143 =
Success Criteria
Put digit in correct column
Line up the decimal point
Write the - sign
Put the decimal point in answer box
Copy numbers correctly
Start at right
Borrow from the left if you need to
Watch out for the zeros!

7. Division
Bus Stop
Example
2137 ÷ 7

8. Division Chunking Example 977 ÷ 18 = Chunking Success!
Work out multiples of the number you are dividing by
e.g. 10x, 5x, 20x, 30x,
Subtract the largest multiple possible
Record in brackets which multiple you are subtracting
Continue until the remainder is smaller than the number you are dividing by
Add up how many multiples you have subtracted
Record your answer e.g. 78 r 9

9. Division
Number Line
Example
170 ÷ 14 =

10. Division
Three examples for you (Think which of the methods you would use to solve them)
380 ÷ 17 =
3788 ÷ 6 =
6912 ÷ 3 =
Remember Chunking Success!
Work out multiples of the number you are dividing by
e.g. 10x, 5x, 20x, 30x,
Subtract the largest multiple possible
Record in brackets which multiple you are subtracting
Continue until the remainder is smaller than the number you are dividing by
Add up how many multiples you have subtracted
Record your answer e.g. 78 r 9

11. Addition
Column Addition = = =