Transcript maths-in-ks1-3 - Westcliff Primary School

KS1 Maths
What we learn and methods we use
What do we teach in KS1 Maths?
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Place value (hundreds, tens and units/ones)
Addition and subtraction
Multiplication (2, 5, 10)
Division
Number bonds from 10 and 20 ( i.e. 7+3=10, 18+2=20)
Time (o’clock, half past, quarter to, quarter past)
Measurement (weight/mass, length, capacity)
Money (everyday money- calculating change)
Problem solving
Handling data (graphing, tables, sorting data)
Shape and space
Today we will focus on the red highlighted examples
Resources
Number line
Numicon
Dienes
Place value cards
Counters
100 square
Interactive computer
resources
Beadstrings
Place Value
We use place value cards, and
numicon or dienes to help
understand the value of each
digit in a number.
Addition - Year 1
Addition can be done in any order - use practical
resources and numberlines to count on from the largest
number to find a total.
5 + 2 = 7
+1
+1
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2
3
4
5
6
7
8
9
Use equipment and think about number facts e.g pairs of
numbers to make 10.
8 + 4 = 12
8
+2
+2
Addition - Year 2
Use knowledge of place value to partition numbers into
tens and units – using practical equipment and numberlines.
25 + 33= 58
Step 1: partition numbers (tens 20 + 30) (units 5+3)
Step 2: add up the tens (20 + 30 = 50)
Step 3: add up the units/ones (5+ 3 = 8)
Step 4: add both
Begin to use empty numberlines starting with the largest number
and count on in tens and ones.
34 + 23 = 57
+10
+10
+1
+1
+1
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34
44
54 55 56 57
Subtraction - Year 1
Subtraction as taking away – children use moveable objects to
physically take away and count the number of objects left.
8 – 3 = 5
Subtraction as counting back when subtracting small numbers.
8 – 3 = 5
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1
2
3
4
5
6
7
8
9
Subtraction as finding the difference.
Subtraction – Year 2
Subtraction as counting back using number facts and a
numberline.
20 – 7 = 13
-5
-2
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12
13
14
15
16
17
18
19
20
Subtraction as finding the difference on a numberline.
20 – 16 = 4
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12
13
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15
16
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18
19
20
Multiplication/Division –Year 1
Laying the foundations for multiplication and division
by counting and looking for patterns.
Counting in 2s, 5s and 10s using images and
numberlines.
Using the 100 square to look for patterns when
counting in 2s, 5s and 10s.
Multiplication – Year 2
As an array
6 x 2 = 12
2 x 6 = 12
As repeated addition
3 x 5 = 3 + 3 + 3 + 3 + 3
5 × 3 = 5 + 5 + 5
They will also learn to recite times tables alongside images.
Division – Year 2
Division by sharing
6 shared equally between 2 groups.
Division by grouping
6 divided into groups of 2