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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. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
repeating decimals
greater than
even
2. Percent x whole
numerator
ratio
Part
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
3. Simplifying complex fractions: two methods
(Amount of increase/original whole) x100%
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
simplify
proportion
4. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
inverse property
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Number of desired outcomes/number of total possible outcomes
5. Average A per B
numerator
value
Total A/total B
Last digit divisible by 2
6. Adding/subtracting decimals
Line up decimal points
Sum of values/number of values
Add zeros to decimals until all decimals have same number of digits
irrational numbers
7. Multiple-event probability
Drop percent - move decimal point two place to left
Probability for each event then multiply individual probabilities together
rational numbers
identity property
8. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Number of desired outcomes/number of total possible outcomes
digit
odd
Last digit 0 or 5
9. New whole
Original whole +/- amount of change
Drop percent - move decimal point two place to left
prime number
even number
10. 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.
irrational numbers
identity property
compensation
Last digit 0 or 5
11. 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?
equation
equivalent
denominator
greatest
12. Dividing decimals
Greater spread in values
even number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
factor
13. When a number is larger than the other number. Example 65 > 56
composite number
Last two digits divisible by 4
divisible
greater than
14. How much a number is worth
composite number
value
Sum of digits divisible by 3
Total A/total B
15. To drop a percent
greatest
product
Divide by 100%
estimate
16. odd + odd
even
greater than
product
evaluate
17. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Divisible by 2 and 3
prime number
less than
Add zeros to decimals until all decimals have same number of digits
18. Two expressions that are set equal to each other; a number sentence with an equal sign
Divide out largest common factor
range
equation
Last digit divisible by 2
19. An equation showing 2 ratios are equal
proportion
Middle value
divisible
variables
20. The largest number in a group of numbers
sum
greatest
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
perfect square
21. Number divisible by 4
sum
product
factor pair
Last two digits divisible by 4
22. 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
Divisible by 2 and 3
compensation
expression
identity property
23. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
Greater spread in values
composite number
least common multiple
mixed number
24. The answer to a multiplication problem
equation
factor pair
greatest common factor
product
25. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Sum of values/number of values
Original whole +/- amount of change
odd number
factor pair
26. Median
even
Middle value
product
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
27. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
less than
divisibility by 3 rule
mixed number
percent
28. Properties of 1 and -1
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29. 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
divisibility by 3 rule
Original whole +/- amount of change
irrational numbers
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
30. 1/5 + 1/4=4/20 +5/20 and 20 is the...
prime factorization
common denominator
product
Probability for each event then multiply individual probabilities together
31. A shortcut for writing repeated multiplication
improper fraction
exponents
whole number
prime number
32. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
place value
variables
fraction
33. The greatest whole number that is a factor of two or more nonzero whole 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
greatest common factor
estimate
divisible
34. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
repeating decimals
evaluate
compatible numbers
prime number
35. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
greatest common factor
terminating decimals
value
36. A number with more than two factors
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
compatible numbers
composite number
greatest common factor
37. Properties of 0
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38. Answer to a division problem
common denominator
LCM is LCD
quotient
improper fraction
39. To perform a calculation - E.g. 2+2=4
Add zeros to decimals until all decimals have same number of digits
compute
Sum of values/number of values
terminating decimals
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)
associative property
Part
compatible numbers
value
41. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
expanded form using exponents
quotient
Part
LCM is LCD
42. The answer to an addition problem
factor
distributive property
Multiply by 100%
sum
43. 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)=
divisibility by 3 rule
simplify
distributive property
Sum of digits divisible by 3
44. Able to be divided evenly (without a remainder)
Number w/o signs
not equal
divisible
commutative property
45. The difference between the greatest and the least numbers in a set of data.
greater than
equal
divisibility by 3 rule
range
46. A fraction out of 100 - %
Sum of digits divisible by 9
percent
Multiply by 100%
Last digit divisible by 2
47. 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)
product
numerator
Greater spread in values
commutative property
48. Relationship in which a number is smaller than another
estimate
improper fraction
product
less than
49. Percent decrease
factor pair
odd number
(Amount of decrease/original whole) x100%
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
50. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
number line
evaluate
place value
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately