Factors & Multiples
What are the factors of 12?
1,2,3,4,6,12
Is 7 a prime number or a composite number?
Prime
Complete the ratio table:
2|4
3|
|8
2|4
3|6
4|8
If the length of a rectangle is 5 cm and the width is 3 cm, what is the area?
5x3=15 cm.
Sarah has 5 packs of stickers. Each pack has 6 stickers. How many stickers does she have in total?
5x6=30
What is one multiple that 3 and 4 share?
12, 24, 36
Give an example of a composite number.
There are lots.
Complete this ratio table:
1 |5
3 |
|20
12|
1 |5
3 |15
4 |20
12|60
A rectangle has a length of 10 cm and an area of 30 cm. What is the width?
3 cm. 10x3=30
A farmer has 40 apples. He wants to divide them equally into baskets with 8 apples each. How many baskets does he need?
5 baskets
List all the multiples of 5 up to 50.
5, 10, 15, 20, 25, 30, 35, 40, 45, 50
What makes a number prime?
It only has TWO factors or it can only be divided by 1 and itself.
Complete this ratio table:
2 6 4
---------------------------
8 40
2 6 4 10
------------------------------
8 24 16 40
If a rectangle has an area of 24 square cm and a length of 6 cm, what is the width?
4 cm. 6x4=24
If a train travels 60 miles in one hour, how far will it travel in 4 hours?
240 miles
What is a factor pair for 36?
1,36 or 6,6 or 3,12 or 2,18 or 4,9
Is 9 a prime number or a composite number? Explain why.
Composite because it has more than 2 factors: 1,3,9
Complete this ratio table:
1 10
------------------------------
9 27 900
1 10 3 100
------------------------------
9 90 27 900
What is the area of a rectangle with length 8 cm and width 4 cm?
8x4=32 cm.
Tom bought 3 books for 7 dollars each. How much did he spend in total?
$21
How many factors does 24 have?
List all prime numbers between 1 and 20.
2,3,5,7,11,13,17,19
Complete this ratio table:
50 |5
30 |
|2
70|
50 |5
30 |3
20 |2
70 |7
A rectangle has dimensions that are 20 cm long and 5 cm wide. What is the area?
20x5=100 cm.
A baker made 120 cookies and packaged them in boxes of 12 cookies each. How many boxes did he fill?
10 boxes