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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. 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
Sum of digits divisible by 9
odd
equal
irrational numbers
2. Percent decrease
Reduce diagonally/vertically then multiply numerators and denominators
(Amount of decrease/original whole) x100%
repeating decimals
whole number
3. A whole number such as 1  3  5 and so on that cannot be evenly divisible by 2
odd number
terminating decimals
factor pair
equal
4. 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
Number of decimal places is total number of decimals places in factors multiplied
distributive property
compatible numbers
5. The smallest number in a group of numbers
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
least
compensation
expanded form using exponents
6. A value that does not change; any number
value
expression
terminating decimals
constants
7. A set of operators  numbers  variables and grouping symbols; no equal sign
compute
compensation
Part
expression
8. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Last two digits divisible by 4
perfect square
common denominator
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
9. Mode
Value occurring most frequently
range
Sum of values/number of values
Number of decimal places is total number of decimals places in factors multiplied
10. Adding/subtracting decimals
Line up decimal points
rational numbers
sum
denominator
11. Simplifying complex fractions: two methods
Add zeros to decimals until all decimals have same number of digits
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
prime number
Original whole +/ amount of change
12. Be identical or equivalent to
equal
(Amount of increase/original whole) x100%
value
least common multiple
13. Average A per B
Total A/total B
greatest common factor
repeating decimals
Original whole +/ amount of change
14. Properties of numbers btw 1 and 1
15. A number that is multiplied by another number to find a producr
greatest common factor
Multiply by 100%
composite number
factor
16. 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
identity property
least
least common multiple
expression
17. Number divisible by 9
factor pair
least common multiple
Sum of digits divisible by 9
Divide out largest common factor
18. The difference between the greatest and the least numbers in a set of data.
range
expanded form using exponents
Number w/o signs
least
19. Number divisible by 3
less than
exponents
Sum of digits divisible by 3
expanded form using exponents
20. Reducing fractions
Divide out largest common factor
exponents
least common multiple
even number
21. Number divisible by 6
percent
Divisible by 2 and 3
number line
quotient
22. The expression of a number as a product of prime factors; use a factor tree!
prime factorization
perfect square
improper fraction
Divisible by 2 and 3
23. Answer to a division problem
simplify
1 dividing by number
product
quotient
24. Adding/subtracting fractions
LCM is LCD
even number
compatible numbers
factor
25. Median
least common multiple
greater than
divisibility by 3 rule
Middle value
26. Multipleevent probability
Probability for each event then multiply individual probabilities together
Last two digits divisible by 4
distributive property
Last digit 0 or 5
27. To drop a percent
prime factorization
greatest common factor
Divide by 100%
compute
28. A number without fractions; an integer E.g. 0  1  2  3  4  5  6  7  8  9...
range
whole number
product
1 dividing by number
29. The answer to a subtraction problem
Multiply by 100%
Original whole +/ amount of change
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
difference
30. A number that represents a part of a whole or a group; also means 'divided by'  E.g. 1/2 3/4.5/6
Sum of values/number of values
fraction
ratio
quotient
31. Numbers that are easy to compute mentally  E.g. 34 / 5 is close to 35 / 5
greatest common factor
order of operations
compatible numbers
inverse property
32. A number with one or more digits to the right of the decimal point  E.g. .33
identity property
equal
decimal
Total A/total B
33. The value of a digit based on its position within a number  e.g. 2 432 The position of the numbers
mixed number
product
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
34. To place a fraction in lowest terms
Multiply by 100%
number line
simplify
greatest common factor
35. 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
Probability for each event then multiply individual probabilities together
exponents
inverse property
Add zeros to decimals until all decimals have same number of digits
36. odd + even
1 dividing by number
Number w/o signs
odd
rational numbers
37. Average value
equivalent
Sum of values/number of values
whole number
not equal
38. Percent increase
(Amount of increase/original whole) x100%
equation
denominator
factor
39. A number with more than two factors
equal
greater than
composite number
improper fraction
40. Dividing fractions
odd
fraction
Divisible by 2 and 3
Invert second term  then multiply
41. Any whole number that ends with 0  2  4  6  or 8  any whole number that can be divided by 2
rational numbers
divisible
even number
Divide by 100%
42. Comparing positive fractions
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
Part
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
square number
43. How much a number is worth
value
Middle value
variables
exponents
44. A number with only two factors  one and itself  E.g. 3 7 11 13 17 19...
prime number
greatest common factor
irrational numbers
Part
45. To perform a calculation  E.g. 2+2=4
square number
(Amount of increase/original whole) x100%
Sum of digits divisible by 9
compute
46. Relationship in which a number is smaller than another
product
range
less than
odd number
47. Two factors together that are multiplied to equal a larger number.
least
evaluate
factor pair
expression
48. A fraction out of 100  %
percent
exponents
Drop percent  move decimal point two place to left
Multiply by 100%
49. Dividing decimals
range
even number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
50. PEMDAS  Parentheses  Exponents  Multiplication & Division (L to R)  Addition & Subtraction (L to R)
not equal
numerator
Total A/total B
order of operations