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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. Reciprocal of number
Original whole +/- amount of change
terminating decimals
LCM is LCD
1 dividing by number

2. Number divisible by 6
product
less than
Divisible by 2 and 3
whole number

3. How much a number is worth
quotient
common denominator
value
even number

4. Multiple-event probability
constants
Probability for each event then multiply individual probabilities together
percent
Last two digits divisible by 4

5. Properties of 0

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6. A fraction out of 100 - %
even number
percent
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
less than

7. To make a percent
even
odd number
Multiply by 100%
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

8. The expression of a number as a product of prime factors; use a factor tree!
product
prime factorization
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Last digit divisible by 2

9. Number divisible by 3
Divisible by 2 and 3
Sum of digits divisible by 3
Middle value
odd number

10. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Invert second term - then multiply
irrational numbers
identity property
compatible numbers

11. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
digit
difference
expanded form using exponents
(Amount of increase/original whole) x100%

12. To place a fraction in lowest terms
proportion
(Amount of increase/original whole) x100%
simplify
exponents

13. 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)
prime number
percent
associative property
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

14. A number that results from multiplying a factor by itself
evaluate
square number
product
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

15. Percent decrease
least common multiple
1 dividing by number
numerator
(Amount of decrease/original whole) x100%

16. A fraction whose numerator is greater than its denominator
odd
divisible
improper fraction
simplify

17. In 4x4=16 - what is 4?
Number w/o signs
root numbers
product
equal

18. Number divisible by 5
divisible
value
(Amount of decrease/original whole) x100%
Last digit 0 or 5

19. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
order of operations
equivalent
compatible numbers
less than

20. Simplifying complex fractions: two methods
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
commutative property
compensation
square number

21. Average A per B
mixed number
Total A/total B
least common multiple
associative property

22. Comparing positive fractions
Number of desired outcomes/number of total possible outcomes
Last digit 0 or 5
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
less than

23. The difference between the greatest and the least numbers in a set of data.
Invert second term - then multiply
range
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
factor pair

24. To drop a percent
simplify
fraction
Number w/o signs
Divide by 100%

25. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
greatest common factor
place value
difference
Divide by 100%

26. The answer to a multiplication problem
prime number
product
square number
even number

27. A value that does not change; any number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
proportion
constants
square number

28. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
prime number
expression
LCM is LCD

29. Answer to a division problem
Drop percent - move decimal point two place to left
quotient
Line up decimal points
greater than

30. A number made up of a whole number and a fraction
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
mixed number
product
compensation

31. To find a number that is close to an exact answer - E.g. 23+24 is around 50
divisibility by 3 rule
least
estimate
improper fraction

32. Median
Sum of values/number of values
range
compatible numbers
Middle value

33. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
common denominator
Greater spread in values
whole number
percent

34. Mode
quotient
expression
Value occurring most frequently
difference

35. Adding/subtracting decimals
odd number
Line up decimal points
Sum of values/number of values
number line

36. 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
square number
greatest common factor
variables
identity property

37. A number with more than two factors
perfect square
Number of decimal places is total number of decimals places in factors multiplied
composite 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

38. New whole
compute
Original whole +/- amount of change
proportion
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

39. Probability
Number of desired outcomes/number of total possible outcomes
Divisible by 2 and 3
factor
value

40. odd + odd
mixed number
Drop percent - move decimal point two place to left
even
commutative property

41. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
divisibility by 3 rule
Add zeros to decimals until all decimals have same number of digits
odd
Greater spread in values

42. Comparing decimal fractions
square number
Add zeros to decimals until all decimals have same number of digits
even
factor pair

43. Multiplying decimals
prime factorization
associative property
Number of decimal places is total number of decimals places in factors multiplied
value

44. 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
quotient
irrational numbers
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

45. Percent increase
quotient
difference
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
(Amount of increase/original whole) x100%

46. Reducing 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
Divide out largest common factor
odd number
least

47. Properties of 1 and -1

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48. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Greater spread in values
equivalent
fraction
sum

49. Answer to a multiplication problem
Divide out largest common factor
Value occurring most frequently
product
proportion

50. A number with one or more digits to the right of the decimal point - E.g. .33
composite number
decimal
Multiply by 100%
numerator