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Test your basic knowledge 
Number Sense Vocab
Start Test
Study First
Subjects
:
math
,
numbersense
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 reenforces your understanding as you take the test each time.
1. Mode
number line
Sum of values/number of values
Value occurring most frequently
distributive property
2. Adding/subtracting fractions
even
LCM is LCD
Total A/total B
Line up decimal points
3. The greatest whole number that is a factor of two or more nonzero whole numbers
distributive property
greatest common factor
Probability for each event then multiply individual probabilities together
denominator
4. A shortcut for writing repeated multiplication
composite number
range
exponents
greatest
5. Number divisible by 5
perfect square
Last digit 0 or 5
even number
compensation
6. To drop a percent
associative property
difference
Sum of values/number of values
Divide by 100%
7. 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
evaluate
Last two digits divisible by 4
inverse property
Total A/total B
8. To place a fraction in lowest terms
compute
simplify
Number of desired outcomes/number of total possible outcomes
difference
9. Natural Numbers  Whole Numbers  Integers  Rational Numbers
prime factorization
rational numbers
Drop percent  move decimal point two place to left
root numbers
10. To find a number that is close to an exact answer  E.g. 23+24 is around 50
estimate
identity property
simplify
composite number
11. Number divisible by 3
Number of desired outcomes/number of total possible outcomes
Sum of digits divisible by 3
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Invert second term  then multiply
12. Simplifying complex fractions: two methods
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
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
greatest
LCM is LCD
13. A number made up of a whole number and a fraction
mixed number
1 dividing by number
Middle value
Add zeros to decimals until all decimals have same number of digits
14. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
terminating decimals
(Amount of increase/original whole) x100%
percent
Multiply by 100%
15. Average value
odd number
denominator
Sum of values/number of values
associative property
16. Reciprocal of number
1 dividing by number
equation
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
place value
17. Properties of 0
18. New whole
improper fraction
perfect square
Greater spread in values
Original whole +/ amount of change
19. Properties of numbers btw 1 and 1
20. odd + odd
ratio
even
Last two digits divisible by 4
Add zeros to decimals until all decimals have same number of digits
21. Percent decrease
(Amount of decrease/original whole) x100%
ratio
common denominator
product
22. A number with only two factors  one and itself  E.g. 3 7 11 13 17 19...
commutative property
product
prime number
odd number
23. Number divisible by 6
ratio
simplify
Divisible by 2 and 3
even
24. To change a percent to a decimal
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
place value
Number of desired outcomes/number of total possible outcomes
Drop percent  move decimal point two place to left
25. Two factors together that are multiplied to equal a larger number.
Last digit 0 or 5
Last two digits divisible by 4
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
factor pair
26. When you add 0 to a number  or mulltiply a number by 1  the result is the same number  e.g. Identity Property of Multiplication: 21x1=1x21=21 or 300x 1 = 300
fraction
number line
commutative property
identity property
27. Reducing fractions
Last two digits divisible by 4
least common multiple
Divide out largest common factor
factor
28. A number that represents a part of a whole or a group; also means 'divided by'  E.g. 1/2 3/4.5/6
fraction
rational numbers
Part
digit
29. Not identical or equivalent to
Line up decimal points
Value occurring most frequently
not equal
compensation
30. 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?
numerator
compensation
value
decimal
31. Multiplying fractions
whole number
Middle value
Reduce diagonally/vertically then multiply numerators and denominators
Sum of values/number of values
32. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
terminating decimals
greater than
Greater spread in values
33. A number with more than two factors
distributive property
1 dividing by number
composite number
root numbers
34. Answer to a multiplication problem
equivalent
numerator
composite number
product
35. 1/5 + 1/4=4/20 +5/20 and 20 is the...
whole number
common denominator
LCM is LCD
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
36. 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.
ratio
sum
compensation
Original whole +/ amount of change
37. A comparison of 2 numbers; one form is a fraction
odd
Sum of digits divisible by 9
Probability for each event then multiply individual probabilities together
ratio
38. The smallest number in a group of numbers
equation
order of operations
least
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
39. To make a percent
evaluate
Multiply by 100%
composite number
irrational numbers
40. A whole number such as 1  3  5 and so on that cannot be evenly divisible by 2
odd number
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
evaluate
Divisible by 2 and 3
41. In 4x4=16  what is 4?
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
root numbers
equal
variables
42. 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?
Number w/o signs
Divide out largest common factor
Line up decimal points
denominator
43. Dividing fractions
factor
prime number
fraction
Invert second term  then multiply
44. A value that does not change; any number
decimal
(Amount of decrease/original whole) x100%
variables
constants
45. Absolute value of number
1 dividing by number
value
greater than
Number w/o signs
46. A number written in expanded form with the place values written in exponential form  E.g. 2432=2000+400+30+2
distributive property
expanded form using exponents
Divide out largest common factor
difference
47. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
expression
divisibility by 3 rule
Part
simplify
48. A line for representing and graphing numbers. Each point on the line corresponds to a number.
ratio
number line
estimate
Middle value
49. Comparing positive fractions
Reduce diagonally/vertically then multiply numerators and denominators
square number
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
perfect square
50. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating 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
even number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend