NUMERACY REVISION NOTES
TERM 3
YEAR 2
FRACTIONS
A fraction is an equal part of a whole.
Half is when a shape or a number is divided into two equal parts. The notation for
half of a whole is written as
½.
Quarter is when a shape or a number is divided into four equal parts. The notation
for quarter of a whole is written as
¼.
Three-quarters means three parts of a whole divided into four parts. The notation
for three quarters of a whole is written as
¾.
EQUIVALENT FRACTIONS
2/2 or 4/4 make 1 whole
½ + ½ = 2/2
¼ + ¼ + ¼ + ¼ = 4/4
½ and 2/4 are equal
FRACTIONS OF NUMBERS
When sharing objects to show;
Half means sharing the objects equally between two people.
Quarter means sharing the objects equally among four people.
Examples:
½ of 8 = 4 (sharing 8 objects equally between 2 people)
¼ of 8 = 2 (sharing 8 objects equally among 4 people)
¾
of 8 = 6 (sharing 8 objects equally among 4 people, 3 people will get 6)
COMBINING FRACTIONS




½
¼
½
¾
+ ½ = 1 whole
+ ¼ + ¼ + ¼ = 1 whole
+ ½ + ½ = 1 whole and ½
+ ¼ + ¼ = 1 whole and ¼
STATISTICS
What is Data?
Data is collection of information such as numbers, words, measurement etc.
Data can be collected in different ways. We can collect data as; ages, height,
favourite food, pet, game, types of flowers etc.
Data can be represented in lists, tables, tally chart, bar chart/block graph,
pictogram, Carroll diagram, Venn diagram, Pie chart, etc.
The data collected is always used to solve questions such as;
1.
2.
3.
4.
The most popular item
the least popular item
number of children altogether
the number of an item more than another etc.
REPRESENTING DATA IN A LIST
List of the items bought at the store
 Biscuits- 3
 Apples- 7
 Eggs- 12
 Bananas- 12
 Candies- 9
 Oranges- 4
REPRESENTINTING DATA USING A TABLE
Tables can be used to show and organize data collected. Tables have rows and
columns.
Table showing the favorite pets of students
Favourite pet
Number of votes
Cat
5
Dog
10
Rabbit
6
Monkey
1
REPRESENTINTING DATA USING A TALLY CHART
A tally chart is used to collect data by using tally marks. Tally marks are always in
groups of 5. The fifth mark always crosses the previous 4.
Tally chart showing the favorite pet of children.
REPRESENTINTING DATA USING A BLOCK GRAPH
A block graph is a way to show data collected. It uses blocks to show numbers to
represent data.
Block graph showing the favorite fruit of students
REPRESENTINTING DATA USING A PICTOGRAM
A pictogram uses small pictures/symbols/drawings to stand for numbers.
A pictogram always has a key to explain what each picture represents.
Pictogram showing the number of children and their favourite fruits.
REPRESENTINTING DATA USING A VENN DIAGRAM
A Venn diagram shows the relationship (similarities and differences) between a
group of different things (a set).
Venn diagrams allows us to sort data into two circles which overlap in the middle.
REPRESENTINTING DATA USING A CARROLL DIAGRAM
A Carroll diagram is used to organize data and group it according to whether it
fits certain criteria. It is an easy way to sort objects, numbers, or concepts by
two different categories using yes/no situations as belonging or not belonging.
Carroll diagrams askes children to sort objects or numbers into four boxes. Each
box has to follow two criteria