Multiples
List 5 multiples of the number 2.
2, 4, 6, 8, 10
The numbers 2, 3, 5, 7, 11 are examples of prime or composite numbers?
Express the following as a rate:
Number of pushups: 40
Time: 60 seconds
40 pushups / 60 seconds OR
40 pushups / 1 min
What is the ratio of boys to girls in class today? (Boys:Girls)
(will depend on the day)
What is 100% of 240?
240
What are the common multiples in the lists below?
5: 5, 10, 15, 20, 25, 30, 35, 40
3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
15 and 30
True or false: one is a prime number
False, it is a unit.
What would be the unit rate for driving 30km in 3 hours? (HINT: unit rate is the amount for one)
10km/hr
There are fruit baskets for sale at the store. For every banana, there is 3 apples. Which ratio does NOT show the ratio of bananas to apples.
A) 1:3 B) 2:6
C) 3:10 D) 4:12
C) 3:10
If there was 3 bananas there would be only 9 apples.
What is 10% of 360?
36
What is the lowest common multiple of 2 and 4?
4
2: 2 , 4 , 6 , 8 ...
4: 4, 8, 12 ...
Find all the factors of 25.
1, 5 , 25
True or false? The following is an example of an equivalent rate: jumping 40 times in 2 minutes and jumping 30 times in 1 minute.
False
1min is half of 2min.
30 jumps isn't half of 40 jumps.
T/F: Having 3 pens for every 6 pencils is the same ratio as having 12 pens for every 24 pencils?
True
pencils: 3x4=12
pens: 6x4=24
OR
Pencils are double the pens so 12x2=24
What is 15% of 180?
27
10% = 18
5% = 9
15% = 27
What is the lowest common multiple of 9 and 15?
45
9: 9, 18, 27, 36, 45
15: 15, 30, 45
Find all the factors of 40.
1, 2, 4, 5, 8, 10 , 20 , 40
Cheryl spends $9.00 for 3 ice cream cones. Her friend, Bev wants 2 ice cream cones. How much should she expect to pay?
It would cost $6.
$9 = $3 = $6
3 cones = 1 cone 2 cone
A recipe calls for 2 cups of sugar for every 5 cups of flour (2:5). How much flour do you need for 10 cups of sugar (10:___)?
25 cups of flour
2 cups of sugar x5 gives you 10 cups flour
5 cups of sugar x5 gives you 25 cups of flour
How much will you save if your $50 helmet is 25% off?
$12.50
10% = $5.00
10% = $5.00
5% = $2.50
25% = $12.50
Pumpkin seeds are planted every 2nd step in a garden. Sunflower seeds are planted every 3rd step. At what step does both a pumpkin seed and a sunflower seed get planted in the garden is 15 steps long?
On step 6 and 12
2: 2, 4, 6, 8, 10, 12, 14
3: 3, 6, 9, 12, 15
What prime numbers can be multiplied together to make 56? (HINT: Factor Tree)
2 x 2 x 2 x 7
Grandpa’s recipe calls for 8 apples to make 2 jars of applesauce. If apples cost $3 for 4, how much will the apples cost to make 3 jars of applesauce?
It will cost him $9.
Step 1: how many apples for 3 jars? = 12
Step 2: how much money for 12 apples? = $9
A recipe calls for 3 cups of milk for every 2 cups of flour (3:2). How many cups of milk would we need for 7 cups of flour (__:7)?
We would need 7.5 cups of milk for 7 cups of flour.
Your family's meal totals $40. If tax is 13%, how much will it cost in the end?
It will cost $45.20.
10% = 4.00 $40.00
1% = 0.40 + $05.20
1% = 0.40 $45.20
1% = 0.40
13% = 5.20