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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. Standard deviation: greater if...
decimal
Number w/o signs
Original whole +/- amount of change
Greater spread in values
2. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
least
product
repeating decimals
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
3. A value that does not change; any number
constants
odd
Probability for each event then multiply individual probabilities together
Reduce diagonally/vertically then multiply numerators and denominators
4. In multiplication or addition - the order of two numbers may be switched around and the answer is the same. Ex: a+b = b+a. or (1x2) x 3=1x (2x3)
Middle value
commutative property
product
odd number
5. Percent decrease
order of operations
identity property
Number of desired outcomes/number of total possible outcomes
(Amount of decrease/original whole) x100%
6. Percent x whole
Invert second term - then multiply
divisible
Part
exponents
7. To make a percent
odd number
Middle value
Total A/total B
Multiply by 100%
8. Comparing positive fractions
simplify
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Middle value
even number
9. 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.
compensation
(Amount of increase/original whole) x100%
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Divide by 100%
10. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
quotient
odd number
rational numbers
Divide by 100%
11. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
mixed number
distributive property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
12. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
terminating decimals
Divide out largest common factor
simplify
compatible numbers
13. Mode
Number w/o signs
Multiply by 100%
Value occurring most frequently
expression
14. Adding/subtracting decimals
Last digit divisible by 2
Greater spread in values
Line up decimal points
identity 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
compute
expanded form using exponents
Sum of digits divisible by 3
16. To place a fraction in lowest terms
Value occurring most frequently
simplify
Number of desired outcomes/number of total possible outcomes
least
17. Simplifying complex fractions: two methods
Greater spread in values
compensation
odd
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
18. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
common denominator
Multiply by 100%
identity property
19. To drop a percent
commutative property
compensation
equation
Divide by 100%
20. The answer to a subtraction problem
composite number
difference
Last digit divisible by 2
constants
21. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
terminating decimals
commutative property
distributive property
sum
22. Dividing decimals
equation
fraction
even number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
23. Percent increase
prime number
Number of decimal places is total number of decimals places in factors multiplied
Last digit divisible by 2
(Amount of increase/original whole) x100%
24. odd + odd
expanded form using exponents
factor pair
even
compute
25. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
least
order of operations
divisible
Part
26. Average value
rational numbers
Sum of values/number of values
divisible
percent
27. When a number is larger than the other number. Example 65 > 56
difference
Divide out largest common factor
greater than
mixed number
28. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Number of desired outcomes/number of total possible outcomes
rational numbers
greater than
estimate
29. 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
numerator
greater than
(Amount of increase/original whole) x100%
30. Reciprocal of number
1 dividing by number
not equal
Number w/o signs
digit
31. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
place value
variables
value
Original whole +/- amount of change
32. Number divisible by 6
expression
equivalent
Divisible by 2 and 3
even number
33. Not identical or equivalent to
denominator
square number
not equal
greatest
34. A number made up of a whole number and a fraction
(Amount of increase/original whole) x100%
less than
mixed number
factor pair
35. A property indicating a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses - such as a(b + c) = ab + ac - or 7x (4+1)=
distributive property
Number of desired outcomes/number of total possible outcomes
denominator
Value occurring most frequently
36. The answer to a multiplication problem
decimal
number line
product
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
37. A number with more than two factors
composite number
estimate
Sum of digits divisible by 9
compatible numbers
38. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
commutative property
prime number
Value occurring most frequently
even number
39. Number divisible by 5
Last digit 0 or 5
LCM is LCD
product
ratio
40. Natural Numbers - Whole Numbers - Integers - Rational Numbers
associative property
composite number
Line up decimal points
rational numbers
41. Reducing fractions
factor pair
mixed number
Divide out largest common factor
equivalent
42. A set of operators - numbers - variables and grouping symbols; no equal sign
divisible
expression
place value
decimal
43. Answer to a division problem
quotient
whole 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
expression
44. Number divisible by 9
Greater spread in values
square number
Sum of digits divisible by 9
Total A/total B
45. 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
least
irrational numbers
associative property
place value
46. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
expression
range
equivalent
product
47. The expression of a number as a product of prime factors; use a factor tree!
fraction
compute
prime factorization
Add zeros to decimals until all decimals have same number of digits
48. A fraction whose numerator is greater than its denominator
improper fraction
Sum of values/number of values
Reduce diagonally/vertically then multiply numerators and denominators
inverse property
49. New whole
not equal
Original whole +/- amount of change
Total A/total B
identity property
50. Number divisible by 4
greater than
Last two digits divisible by 4
product
equivalent