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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. Reciprocal of number
inverse property
product
1 dividing by number
quotient
2. Percent decrease
proportion
divisible
odd number
(Amount of decrease/original whole) x100%
3. A number that is multiplied by another number to find a producr
factor
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
even
odd number
4. The answer to a subtraction problem
irrational numbers
Add zeros to decimals until all decimals have same number of digits
difference
odd number
5. Able to be divided evenly (without a remainder)
proportion
divisible
Divisible by 2 and 3
improper fraction
6. A number that results from multiplying a factor by itself
square number
constants
mixed number
Greater spread in values
7. Percent increase
equivalent
(Amount of increase/original whole) x100%
Sum of digits divisible by 3
estimate
8. 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
irrational numbers
Line up decimal points
repeating decimals
number line
9. To find the answer for; solve
evaluate
odd
less than
Last digit divisible by 2
10. The expression of a number as a product of prime factors; use a factor tree!
root numbers
prime factorization
Divisible by 2 and 3
Middle value
11. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Sum of values/number of values
range
order of operations
Middle value
12. 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.
Invert second term - then multiply
compensation
order of operations
composite number
13. Multiplying fractions
divisible
Divide out largest common factor
digit
Reduce diagonally/vertically then multiply numerators and denominators
14. A number with more than two factors
perfect square
composite number
value
commutative property
15. 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?
denominator
Number w/o signs
mixed number
Number of decimal places is total number of decimals places in factors multiplied
16. A line for representing and graphing numbers. Each point on the line corresponds to a number.
less than
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
number line
fraction
17. Average A per B
Line up decimal points
Total A/total B
product
Value occurring most frequently
18. How much a number is worth
value
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
estimate
rational numbers
19. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Number of decimal places is total number of decimals places in factors multiplied
denominator
mixed number
20. Standard deviation: greater if...
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
mixed number
Greater spread in values
equal
21. Number divisible by 6
denominator
Line up decimal points
Divisible by 2 and 3
least
22. To make a percent
prime number
repeating decimals
sum
Multiply by 100%
23. Probability
Number of desired outcomes/number of total possible outcomes
square number
number line
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
24. Properties of 1 and -1
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25. The greatest whole number that is a factor of two or more nonzero whole numbers
irrational numbers
greatest common factor
sum
least common multiple
26. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
LCM is LCD
odd number
root numbers
Probability for each event then multiply individual probabilities together
27. The difference between the greatest and the least numbers in a set of data.
not equal
range
Sum of digits divisible by 9
distributive property
28. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
prime number
least common multiple
estimate
29. A set of operators - numbers - variables and grouping symbols; no equal sign
divisible
Number of desired outcomes/number of total possible outcomes
expression
equivalent
30. Answer to a division problem
compute
quotient
fraction
Number of decimal places is total number of decimals places in factors multiplied
31. Number divisible by 5
Original whole +/- amount of change
Part
Last digit 0 or 5
percent
32. To change a percent to a decimal
Sum of digits divisible by 3
(Amount of decrease/original whole) x100%
Drop percent - move decimal point two place to left
LCM is LCD
33. Number divisible by 2
Last digit divisible by 2
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
number line
Sum of values/number of values
34. Reducing fractions
Last digit 0 or 5
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Divide out largest common factor
denominator
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
whole number
inverse property
commutative property
equal
36. Multiple-event probability
Probability for each event then multiply individual probabilities together
square number
prime factorization
greater than
37. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
decimal
place value
Drop percent - move decimal point two place to left
Divide out largest common factor
38. Median
Sum of digits divisible by 9
Middle value
numerator
irrational numbers
39. odd + even
place value
odd
Reduce diagonally/vertically then multiply numerators and denominators
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
40. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Total A/total B
rational numbers
terminating decimals
Sum of values/number of values
41. An equation showing 2 ratios are equal
Last two digits divisible by 4
proportion
improper fraction
less than
42. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
expression
Greater spread in values
Number of decimal places is total number of decimals places in factors multiplied
divisibility by 3 rule
43. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Number of desired outcomes/number of total possible outcomes
divisibility by 3 rule
prime number
factor
44. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
even number
constants
prime number
sum
45. Mode
whole number
greatest common factor
least common multiple
Value occurring most frequently
46. Number divisible by 4
Last two digits divisible by 4
digit
Sum of digits divisible by 3
Probability for each event then multiply individual probabilities together
47. Dividing decimals
product
Line up decimal points
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
difference
48. Simplifying complex fractions: two methods
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
prime factorization
order of operations
1 dividing by number
49. Average value
Sum of values/number of values
least
Number of desired outcomes/number of total possible outcomes
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
50. 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
equation
prime factorization
Middle value