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Test your basic knowledge |
Number Sense Vocab
Start Test
Study First
Subjects
:
math
,
number-sense
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A set of operators - numbers - variables and grouping symbols; no equal sign
prime number
Multiply by 100%
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
expression
2. odd + even
Total A/total B
odd
irrational numbers
value
3. Probability
even number
range
Number of desired outcomes/number of total possible outcomes
Add zeros to decimals until all decimals have same number of digits
4. Average value
number line
square number
evaluate
Sum of values/number of values
5. To place a fraction in lowest terms
fraction
simplify
Divide by 100%
Original whole +/- amount of change
6. A value that does not change; any number
constants
less than
Probability for each event then multiply individual probabilities together
Divide by 100%
7. Multiple-event probability
Sum of digits divisible by 3
repeating decimals
Probability for each event then multiply individual probabilities together
numerator
8. Able to be divided evenly (without a remainder)
Sum of digits divisible by 9
Number w/o signs
simplify
divisible
9. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
exponents
identity property
Drop percent - move decimal point two place to left
10. Relationship in which a number is smaller than another
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
less than
terminating decimals
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
11. Reducing fractions
Divide out largest common factor
improper fraction
proportion
(Amount of increase/original whole) x100%
12. Adding/subtracting decimals
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide out largest common factor
evaluate
Line up decimal points
13. Number divisible by 9
improper fraction
composite number
difference
Sum of digits divisible by 9
14. The number at the top of a fraction; stands for the parts of a set you are considering - E.g. 3/4 What position is 3?
divisible
numerator
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
improper fraction
15. Number divisible by 5
Last digit 0 or 5
repeating decimals
Number w/o signs
prime factorization
16. The expression of a number as a product of prime factors; use a factor tree!
range
prime factorization
improper fraction
least
17. An equation showing 2 ratios are equal
fraction
proportion
equation
compatible numbers
18. Dividing decimals
prime factorization
Sum of digits divisible by 9
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
19. The property which allows you to add a number's opposite to it and always get 0 - The relationship of addition to subtraction or multiplication to division
inverse property
0 and 1: Reciprocal greater than number - square less than number - positive number's product smaller than number - negative number's product larger than number; -1 and 0: reciprocal less than number
numerator
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
20. The largest number in a group of numbers
greatest
mixed number
not equal
estimate
21. To perform a calculation - E.g. 2+2=4
prime number
compute
Last two digits divisible by 4
proportion
22. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
least common multiple
even number
associative property
expanded form using exponents
23. Cannot be expressed in the form a/b. Include square roots of whole numbers that are not perfect squares and non terminating decimals that do not repeat. pi
Line up decimal points
irrational numbers
Divisible by 2 and 3
rational numbers
24. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Part
number line
estimate
25. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
Invert second term - then multiply
equivalent
Part
Number w/o signs
26. Mode
quotient
factor pair
Value occurring most frequently
expanded form using exponents
27. A property of real numbers that states that the sum or product of a set of numbers is the same - regardless of how the numbers are grouped - (a+b)+c=a+(b+c) - e.g. (1+2)+3=1+(2+3)
associative property
prime factorization
even
whole number
28. To drop a percent
product
Divide by 100%
(Amount of increase/original whole) x100%
improper fraction
29. A number with more than two factors
identity property
Part
composite number
Number of desired outcomes/number of total possible outcomes
30. The bottom number in a fraction; tells how many parts a whole is divided into OR how many parts in a group - E.g. 2/4 and what position is the 4?
estimate
denominator
composite number
even number
31. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
proportion
range
Total A/total B
32. The answer to a subtraction problem
Multiply by 100%
perfect square
difference
root numbers
33. Adding/subtracting fractions
least
LCM is LCD
greatest common factor
Divide by 100%
34. Multiplying fractions
mixed number
greater than
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Reduce diagonally/vertically then multiply numerators and denominators
35. To change a percent to a decimal
estimate
equivalent
Drop percent - move decimal point two place to left
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
36. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
equivalent
Value occurring most frequently
Greater spread in values
expanded form using exponents
37. A number made up of a whole number and a fraction
equation
(Amount of decrease/original whole) x100%
less than
mixed number
38. Simplifying complex fractions: two methods
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
irrational numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide out largest common factor
39. To make a percent
constants
0 and 1: Reciprocal greater than number - square less than number - positive number's product smaller than number - negative number's product larger than number; -1 and 0: reciprocal less than number
Multiply by 100%
divisibility by 3 rule
40. Standard deviation: greater if...
proportion
expression
Greater spread in values
Sum of values/number of values
41. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
not equal
digit
odd
mixed number
42. A number with one or more digits to the right of the decimal point - E.g. .33
Original whole +/- amount of change
decimal
greatest
odd
43. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
least
Middle value
LCM is LCD
44. Number divisible by 4
common denominator
improper fraction
compensation
Last two digits divisible by 4
45. The answer to a multiplication problem
constants
product
exponents
square number
46. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
composite number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
47. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Last digit 0 or 5
place value
composite number
denominator
48. Absolute value of number
equation
Number w/o signs
improper fraction
even
49. Choosing numbers close to the numbers in a problem - and then adjusting the answer to compensate for the numbers chosen - E.g. 23 + 18 and 23+20=43 Since 2 was added to 18 to make 20 - we need to take 2 away from 43.
value
compensation
fraction
Sum of digits divisible by 9
50. The answer to an addition problem
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
odd number
greatest
sum