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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. The answer to a multiplication problem
equivalent
Part
Multiply by 100%
product
2. To change a percent to a decimal
Drop percent  move decimal point two place to left
factor pair
perfect square
least
3. Simplifying complex fractions: two methods
LCM is LCD
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
Divide out largest common factor
4. Be identical or equivalent to
equal
less than
odd
place value
5. 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
odd number
Reduce diagonally/vertically then multiply numerators and denominators
identity property
proportion
6. A fraction out of 100  %
percent
decimal
equivalent
place value
7. 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.
(Amount of increase/original whole) x100%
numerator
compensation
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
8. Number divisible by 6
least
not equal
Divisible by 2 and 3
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
9. A set of operators  numbers  variables and grouping symbols; no equal sign
expanded form using exponents
common denominator
Sum of values/number of values
expression
10. A value that does not change; any 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
compute
prime number
constants
11. Dividing fractions
Invert second term  then multiply
equation
Reduce diagonally/vertically then multiply numerators and denominators
less than
12. Any of the symbols used to write numbers (0  1  2  3  4  5  6  7  8  9)
identity property
compensation
digit
repeating decimals
13. A number with more than two factors
Divisible by 2 and 3
Number of decimal places is total number of decimals places in factors multiplied
odd number
composite number
14. A whole number such as 1  3  5 and so on that cannot be evenly divisible by 2
Number of decimal places is total number of decimals places in factors multiplied
equivalent
odd number
not equal
15. The greatest whole number that is a factor of two or more nonzero whole numbers
compensation
greatest common factor
improper fraction
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
16. A number that results from multiplying a factor by itself
square number
1 dividing by number
even number
equation
17. Percent decrease
terminating decimals
compensation
common denominator
(Amount of decrease/original whole) x100%
18. An equation showing 2 ratios are equal
compute
repeating decimals
proportion
Part
19. Multipleevent probability
odd number
Probability for each event then multiply individual probabilities together
Part
simplify
20. Mode
rational numbers
Sum of digits divisible by 9
Value occurring most frequently
Sum of values/number of values
21. Probability
compensation
associative property
Probability for each event then multiply individual probabilities together
Number of desired outcomes/number of total possible outcomes
22. Number divisible by 9
order of operations
Sum of digits divisible by 9
expanded form using exponents
prime factorization
23. A number that represents a part of a whole or a group; also means 'divided by'  E.g. 1/2 3/4.5/6
rational numbers
Number of decimal places is total number of decimals places in factors multiplied
terminating decimals
fraction
24. New whole
digit
Invert second term  then multiply
Original whole +/ amount of change
greatest common factor
25. Multiplying decimals
compute
exponents
Number of decimal places is total number of decimals places in factors multiplied
common denominator
26. 1/5 + 1/4=4/20 +5/20 and 20 is the...
difference
common denominator
evaluate
Part
27. A fraction whose numerator is greater than its denominator
distributive property
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
improper fraction
repeating decimals
28. Dividing decimals
divisibility by 3 rule
Middle value
value
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
29. A comparison of 2 numbers; one form is a fraction
proportion
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
identity property
ratio
30. Properties of 1 and 1
31. Two factors together that are multiplied to equal a larger number.
factor pair
odd
prime number
constants
32. To find the answer for; solve
terminating decimals
Last digit divisible by 2
inverse property
evaluate
33. Adding/subtracting decimals
order of operations
Line up decimal points
Number w/o signs
compensation
34. Number divisible by 2
greatest common factor
Last digit divisible by 2
greater than
value
35. The smallest number in a group of numbers
divisibility by 3 rule
least
percent
irrational numbers
36. Average A per B
Total A/total B
prime factorization
decimal
factor
37. Natural Numbers  Whole Numbers  Integers  Rational Numbers
decimal
mixed number
rational numbers
Drop percent  move decimal point two place to left
38. Reciprocal of number
Divisible by 2 and 3
expression
prime factorization
1 dividing by number
39. Number divisible by 5
Last digit 0 or 5
equivalent
compute
rational numbers
40. 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)
number line
associative property
denominator
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
41. Adding/subtracting fractions
digit
Sum of digits divisible by 9
common denominator
LCM is LCD
42. The answer to a subtraction problem
ratio
difference
Sum of digits divisible by 9
associative property
43. Number divisible by 3
Invert second term  then multiply
Sum of digits divisible by 3
Divide out largest common factor
greater than
44. Answer to a division problem
quotient
not equal
Middle value
Number of decimal places is total number of decimals places in factors multiplied
45. To perform a calculation  E.g. 2+2=4
expanded form using exponents
compatible numbers
Sum of digits divisible by 3
compute
46. A number that is multiplied by another number to find a producr
digit
factor
least
commutative property
47. A letter that represents a value that may change
greatest
fraction
variables
Drop percent  move decimal point two place to left
48. How much a number is worth
value
constants
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
simplify
49. 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
odd
terminating decimals
irrational numbers
LCM is LCD
50. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
product
order of operations
compensation