1,3,5,7,9 0,2,4,6,8 chris clements properties of number odds and even numbers
TRANSCRIPT
1,3,5,7,9
0,2,4,6,8Chris Clements
Properties of Number
Odds and Even Numbers
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Learning Objective:
<Steps to success>
Whole numbers (numbers that we count) can also be
called odd or even numbers.This includes numbers like
1, 2, 3, 4… 136… 5265… and many, many more…
Odds and EvensIn this lesson you will
learn about odd and even numbers
When choosing two equal teams; it is best to have an
even number of participants.Do you know why?
Lets see; There are 10 ants who need to put into two equal teams.
Can it be done?
Team A Team B
Can you see why 10
is an even
number?
How many ants are there now?
10 + 5 = 15 so we now have 15 ants.
Five more ants come along.
What will happenwhen we put them into 2 teams?
Team A Team B
Can you see why 15
is an odd
number?
I’m the odd one out!
Odd numbers end in a 1, 3, 5, 7 or 9
Even Numbers
Even numbers end in a 0, 2, 4, 6 or 8
Odd Numbers
All the numbers in the 2 times table are even.
If a number is not in the 2 times table then it is odd.
Look at this number grid;
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
All these
numbers can be called odd or even.
What do you
notice about
the odd number
s?
What do you notice about the even numbers?
continued
When finding odds and even numbers;
1) Look at the end digit (the units digit)2) If it ends in a 0, 2, 4, 6 or 8 then the
number is even3) If it ends in a 1, 3, 5, 7 or 9 then the
number is odd
Odds and Evens
Steps to success
Lets see how good you are;Sort these numbers into
two groups; odds and evens.
Odd Even
Lets have a go at some more;
Odd Even
Lets have a go at some more;
Odd Even
Activity
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Plenary
Which numbers do
not belong in this set?
Odd
Using these digit cards make
an even number. The
hundreds digit is greater than
3.