Number Sense
A ratio comparing two different kinds of measures where the second measure is 1.
For example: 50mph 45bpm 24pages/hr
What is Unit Rate?
A comparison between two numbers.
For example:
3/4, 3 to 4, 75%, 0.75
What are Ratios?
A ratio out of 100.
For example:
1/10 = 10/100 = 10%
1/4 = 25/100 = 25%
1/20 = 5/100 = 5%
What are Percents?
The answer to an addition problem.
For example:
2 + 4 = 6
2 plus 4 equals 6
add 2 to 4 to get 6
What is the Sum?
The answer to a multiplication problem.
For example:
2·6 = 12
2x6 = 12
(2)(6) = 12
What is the Product?
Money added to an original amount saved or borrowed.
For example:
Savings $500 @ 2% = 1.02(500) = $510 you get.
Loan $500 @ 5% = 1.05(500) = $525 you owe.
What is Interest?
Two equal ratios
For example:
1/2 = 4/8
6/10 = 12/20
What are Proportions?
10% of $19.00
What is $1.90?
The answer to a subtraction problem.
For example:
6 – 1 = 5
6 minus 1 equals 5
6 take away 1 is 5
What is the Difference?
The answer to a division problem
What is the Quotient?
Positive whole numbers, 0, and negative whole numbers.
For example: {…-3, -2, -1, 0, 1, 2, 3…}
What are Integers?
The number for the question mark in the following problem:
?/16 = 2/4
What is 8?
35% of $28.00
What is $9.80?
The value of −5 + 5
What is 0?
The factors of 15
What is 1, 3, 5, 15?
A number that can be written as a/b, where a and b are integers and b is NOT zero.
For example: 1/3, 0.2 = 2/20, -4 = -4/1, 25% = 25/100
*NOTE: the / is a fraction line.
What are Rational numbers?
The number for the question mark in the following problem:
6/50 = ?/25
What is 3?
1/4 of $850
What is $212.50?
The value of −4.8 + −5.2
What is –10?
The value of 1/4 · 4/3
What is 1/3?
A number with exactly two factors.
For example:
2 = 1·2
5 = 1·5
3 = 1·3
17 = 1·17
31 = 1·31
What are Prime numbers?
The fraction, decimal, and percent equivalent of 48 to 80.
What is 3/5, 0.6, and 60%?
15% of $455
What is $68.25?
The value of −3.7 + 9.2
What is 5.5?
The value of 1/4 divided by 1/2
What is 1/2?