Vocabulary
The Latin word per centum, which means out of 100, is the root of what mathematical term?
Percent (%)
Write 17% as a fraction.
17/100
Express $20 out of a total of $200 as a simplified fraction of the total.
1/5
Simplify the ratio 3:9.
1:3
t + 7, where t = 5
5 + 7 = 12
What is a pronumeral?
A letter that stands for a number.
Write 36% as a simplified fraction.
9/25
Express $20 out of a total of $200 as a percentage of the total.
20%
Simplify the statement "texting 48 words in 3 minutes" to a rate.
16 words/minute
or
16 words per minute
10/t + 4 - t, where t = 5
10/5 + 4 - 5 = 1
What word describes "consists of numbers and pronumerals combined with multiplication or division".
"Term"
Convert the fraction 5/100 into a percentage and a decimal.
5% and 0.05
A glass of cordial is 1 part syrup and 9 parts water. Express the amount of syrup as a fraction of the total.
1/10
Simplify the ratio 60:24.
5:2
5x + y + 8, where x = 4 and y = 7
5(4) + 7 + 8
= 35
To "substitute" a value means to do what?
Replace the pronumeral in an expression with a number
Convert the fraction 11/25 to a percentage and a decimal.
44% and 0.44
A glass of cordial is 1 part syrup and 9 parts water. Express the amount of water as a percentage of the total.
90%
Simplify the following statement "Flying 900 kilometres in 90 minutes" to a rate in simplest form.
10km/min
or
600 km/h
80 - (2xy + y), where x = 4 and y = 7
80 - (2 x 4 x 7 + 7)
= 80 - 63
= 17
What do you call the number in front of a pronumeral?
Coefficient
Write the decimal 1.1 as a percent and fraction.
110% or 110/100.
A mix of concrete is made up of 1 part of cement to 4 parts of sand. Express the amount of sand as a fraction and percentage of the total.
4/5
80%
By calculating a common rate, determine the best buy for the following brands of dog food.
A 5kg bag of King for $35
A 12 kg bag of Thrive for $60
(Cheaper brand named half points, cheaper brand named and cost per kg full points)
Thrive dog food best buy. $5/kg compared to $7/kg for King.
If 7 + b = 12. What is b?
5