Addition
Subtraction
Δ (mental methods) I can use a
number line to find the
difference:
Δ I can use my number facts
to help me (e.g. add to add 49
I add 50, then take away one):
Lo
Lower Key Stage Two
Δ(mental method) I can use
an empty number line and
count on from the largest
number in the calculation:
Δ (mental method) If the number
is near to a multiple of 10 or 100,
I can count on using an empty
number line:
Δ I can borrow from the column
to the left:
(expanded method)
Multiplication
Division
Δ I can use repeated addition on
a number line:
4 times 6 is 6 + 6 + 6 + 6 = 24
or 4 lots of 6 or 6 x 4
Δ I can divide using repeated
subtraction on a number line:
Δ I can use known number facts
to help me (commutative law,
doubling etc):
e.g.
16x4=64
16x2=32
32x2=64
Δ I can begin to use the grid
method, using an array to help me:
Δ I can divide using repeated
subtraction on a number line,
showing remainders:
Δ I can use a number line to
chunk:
Δ I can partition a number in
order to add:
Δ I can use scaling to help me
solve division problems:
My ribbon is 24 cm long. Can
you cut a ribbon 3 times
shorter?
53+36=89
+30
53
or
+6
83
53+36=89
The Meadows Primary School
89
Δ I can check my answer using the
inverse operation.
Calculation Policy 2014
Mrs Kuffour
Addition
50+30=80
3+6=9
80+9=89
Δ I can subtract three and four
digit numbers using expanded
column subtraction:
30
Δ I can use physical resources
to support my working out:
341- 123
600
100
= 2000 700 50 4
1000 500 60 2
1000 100 90 2
11
300
-100
200
40
20
10
1
3
8
30
11
300
-100
200
40
20
10
1
3
8
or
341- 123
2754
-1562
1192
61
Δ I can use column addition
and carry over into the next
column:
The Meadows Primary School
Division
3 times
Δ I can partition numbers in
order to multiply:
3 times
15 x 5 = 10 x 5 and 5 x 5 as tall
shorter
Δ I can begin to use short
division with whole number
answers, using the image of the
array and place value apparatus
to help
me:
An image
for 56
7
56÷8=7
Δ I can use the grid method to
multiply two and three digit
numbers by a single digit:
2754
1562
1192
Δ I can use column subtraction
and borrow from the column to the
left:
Δ I can use expanded column
addition and start by adding
the units first:
Multiplication Models for division
Scaling
Subtraction
Δ I can relate multiplication to
scaling:
My string is 12cm long. Cut a piece
of string three times longer.
22
8
7
56
How
many 7s
can I
see?
Δ I can use short division to
divide numbers with no
remainder:
Δ I can multiply a three digit
number by a single digit using a
formal written method:
136 x 5
Calculation Policy 2014
Mrs Kuffour
Progressing on to
Addition
Subtraction
Multiplication
x
Δ (mental method)
I can partition a number in
order to add:
358+73=431
300+0=300
50+70=120
8+3=11
300+120+11=431
Δ I can use column addition to
add three or four digit
numbers, involving carrying
over into the next column:
100
30
Division
6
5
Progressing to the expanded
short multiplication method (least
significant digit first)
136
x 5
30
150
500
680
Moving to the formal written
method.
136
X 5
680
13
The Meadows Primary School
Calculation Policy 2014
Mrs Kuffour