Unit 3
Write each number as a fraction, decimal and percentage.
0.4
3/4
66%
2/5 40%
75% 0.75
33/50 0.66
What is the formula for the area and circumference of a circle?
Pi x D
What is an improper fraction?
A fraction whose numerator is larger than the denominator.
What is the difference between an equation and an expression?
An equation is equal to something.
What are the 4 measures of central tendency, or averages?
Mean, mode, median and range
What is 1.24+2.78?
4.02
What is the area of a parallelogram with height 3m and length 6m?
18m2
10/15 - 7/15=
1/5
Find x
x+3=9
x=6
Find the mean of the following numbers:
0,3,4,5,6,7,7,8
5
Hugo is buying a new pair of sneakers. They normally cost $60 but they are on sale for 25% off. How much is the sale price of the sneakers?
$45
Draw 3 triangles with area of 12cm2
Answers will vary.
Find 3/4+2/7
1 and 1/28
Find x
3x-14=31
x=15
Which number(s) is/are the outlier(s) in this set?
0,2,3,4,5,8,10,19
19
A cabbage farm has been infested with insects, the insects ate a lot of Mr. Green's cabbages. Now only 30% of the cabbages remain. If there were 260 cabbages before the infestation, how many are left now?
78 Cabbages
What is the area and circumference of a circle with diameter 12cm?
Area = 113.04cm2
Circumference = 37.68cm
Find 3 and 1/2 plus 2 and 5/6
6 and 1/3
Write and then solve an equation for this problem.
Jack is thinking of a number, he divides his number by 2 and then adds 12 to it. He gets 23 as an answer. What is Jack's number?
x/2 + 12 = 23
x=22
Find the median of the following set of numbers.
10,13,14,15,16,12,20,21
14.5
Tyra is buying some new carpet for her apartment. She needs 12.4 square meters. 2 shops sell the type of carpet she wants: Carpet Right sells the carpet for $3.40 per square meter and Floors Direct sells it for $3.57 per square meter. How much cheaper would it be for Tyra if she buys from Carpet right?
$2.11
What is the area of a triangle with base 80cm and height 3m?
1.2m2
12000cm2
Two recipes require bananas to make a cake. The first recipe needs 2 and 4/5 cups and the second needs 2 and 3/7 cups. How much more does recipe 1 need?
13/35 cups more
Write and then solve an equation for this problem.
Kylie goes for a walk everyday. Today she walked twice as much as she walked yesterday and then she walked 3km extra. If she walked 13km today, how far did she walk yesterday?
2x+3=13
x=5km
What is the probability of flipping a coin and getting heads and then rolling a dice and getting an odd number?
1/4