Square Numbers
In year 5, 52 children have the favourite colour blue. How many children is that?
52 = 25
What is a cube number?
A cube number is the product of a number that is multiplied by itself, then multiplied by itself again.
SONG BREAK: https://www.youtube.com/watch?v=h85cIBAV3VU
What are the first 2 prime numbers, after 1?
2 and 3
List two common factors of 35 and 20
1 and 5
Skip count in 5s to 100.
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 100
Mr Booth buy 42 pencil sharpeners. How many does he buy?
42 = 16
I have 33 potatoes that I need to peel for dinner. How many do I have?
33 = 27
3 x 3 = 9
9 x 3 = 27
Define what a prime number is.
A prime number is a number which only has 2 factors: 1 and itself.
Must include the word factor
SONG BREAK! https://www.youtube.com/watch?v=cRz4hW9SPPc
True or false: An even and an odd number can only have a maximum of 2 common factors.
False. 15 and 30 have 1, 3, 5 and 15 as common factors.
What is 345 multiplied by 10?
3,450
Miss Light has 92 buttons. How many buttons does she have?
92 = 81
What is 53?
5 x 5 = 25
25 x 5 = 125
List every factor of 20
1, 2, 4, 5, 10 and 20
List 4 common factors of 24 and 32
1, 2,4 and 8
What is 2,839 multiplied by 100?
283,900
Half of Miss Richard's class is 32. How many students are in her class altogether?
A handbag costs £73 . How much does it cost?
£343
Here are some factors of 24. Which ones are missing?
2, 3, 4, 6
1, 8, 12, 24
What are all the common factors of 20 and 28?
1, 2 and 4
Skip count in 8s from 0 to 96.
8 16 24 32 40 48 56 64 72 80 88 96
SONG BREAK: https://www.youtube.com/watch?v=TdqAA9Ky2DY
What is 82 + 72 - 42 ?
82 = 64
72 = 49
64 + 49 = 113
42 =16
113 - 16 = 97
How much more is 93 than 83?
93 is 729
9 x 9 = 81. 81 x 9 = 729
83 is 512. 8 x 8 = 64. 64 x 8 = 512
729 - 512 = 217
How many prime numbers are there between 1 and 20 (not including 1)?
8
They are: 2, 3, 5, 7, 11, 13, 17, 19
What is the greatest common factor of 24 and 40?
There are 4 common factors of 24 and 40, that are 8, 1, 2, and 4.
8 is the greatest.
SONG BREAK: https://www.youtube.com/watch?v=1qAc22WxsWA
What is 73 minus 72?
73 = 343
72 = 49
343-49 = 294