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Number Sense Vocab

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. To change a percent to a decimal
improper fraction
evaluate
Drop percent - move decimal point two place to left
rational numbers

2. Properties of numbers btw -1 and 1

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3. Reducing fractions
Number of decimal places is total number of decimals places in factors multiplied
Divide out largest common factor
digit
decimal

4. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Number of decimal places is total number of decimals places in factors multiplied
repeating decimals
root numbers
prime factorization

5. Number divisible by 4
compute
Last two digits divisible by 4
Multiply by 100%
mixed number

6. Simplifying complex fractions: two methods
Last two digits divisible by 4
distributive property
Divisible by 2 and 3
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

7. Average A per B
digit
equal
order of operations
Total A/total B

8. Relationship in which a number is smaller than another
less than
compensation
rational numbers
exponents

9. Probability
mixed number
(Amount of decrease/original whole) x100%
Number of desired outcomes/number of total possible outcomes
divisibility by 3 rule

10. 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
Number of desired outcomes/number of total possible outcomes
1 dividing by number
constants
identity property

11. 1/5 + 1/4=4/20 +5/20 and 20 is the...
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
square number
common denominator
quotient

12. A shortcut for writing repeated multiplication
Middle value
commutative property
exponents
Last digit divisible by 2

13. Multiple-event probability
compensation
Probability for each event then multiply individual probabilities together
Sum of digits divisible by 9
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

14. A number with more than two factors
exponents
Divisible by 2 and 3
composite number
product

15. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
(Amount of increase/original whole) x100%
fraction
LCM is LCD
terminating decimals

16. New whole
Total A/total B
Original whole +/- amount of change
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
factor

17. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
value
Invert second term - then multiply
quotient
digit

18. Comparing positive fractions
inverse property
associative property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Divisible by 2 and 3

19. To perform a calculation - E.g. 2+2=4
Part
variables
Last digit divisible by 2
compute

20. Median
Divide by 100%
equal
Middle value
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

21. The answer to a subtraction problem
associative property
difference
composite number
whole number

22. To place a fraction in lowest terms
associative property
LCM is LCD
simplify
odd number

23. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
mixed number
range
place value
proportion

24. How much a number is worth
value
range
compensation
product

25. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
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
compatible numbers
Last digit divisible by 2
product

26. 8x8=64 What is 64?
(Amount of increase/original whole) x100%
Divisible by 2 and 3
perfect square
Last two digits divisible by 4

27. Able to be divided evenly (without a remainder)
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
range
divisible
Reduce diagonally/vertically then multiply numerators and denominators

28. The answer to a multiplication problem
Middle value
product
Divide out largest common factor
distributive property

29. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
divisible
Original whole +/- amount of change
Add zeros to decimals until all decimals have same number of digits

30. A set of operators - numbers - variables and grouping symbols; no equal sign
even
expression
place value
Add zeros to decimals until all decimals have same number of digits

31. A fraction out of 100 - %
number line
range
expression
percent

32. Two factors together that are multiplied to equal a larger number.
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
factor pair
prime number
value

33. Percent x whole
exponents
Part
compute
compensation

34. A number that results from multiplying a factor by itself
even number
product
square number
Part

35. Number divisible by 5
repeating decimals
denominator
Part
Last digit 0 or 5

36. When a number is larger than the other number. Example 65 > 56
difference
odd number
greater than
number line

37. Dividing fractions
inverse property
Part
digit
Invert second term - then multiply

38. 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)=
odd number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
rational numbers
distributive property

39. The greatest whole number that is a factor of two or more nonzero whole numbers
numerator
odd number
greatest common factor
Original whole +/- amount of change

40. Be identical or equivalent to
Invert second term - then multiply
product
repeating decimals
equal

41. A number with one or more digits to the right of the decimal point - E.g. .33
distributive property
decimal
rational numbers
greatest common factor

42. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
range
even number
fraction

43. 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
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
factor pair
greatest

44. Properties of 0

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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
place value
irrational numbers
terminating decimals
whole number

46. An equation showing 2 ratios are equal
identity property
Greater spread in values
proportion
Add zeros to decimals until all decimals have same number of digits

47. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
compatible numbers
order of operations
equal
Value occurring most frequently

48. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
greater than
ratio
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
odd number

49. In 4x4=16 - what is 4?
whole number
root numbers
greatest
commutative property

50. Standard deviation: greater if...
Last digit divisible by 2
Greater spread in values
odd
common denominator