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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. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
Number of decimal places is total number of decimals places in factors multiplied
quotient
estimate

2. Answer to a multiplication problem
1 dividing by number
Add zeros to decimals until all decimals have same number of digits
product
Number w/o signs

3. Percent increase
repeating decimals
not equal
Invert second term - then multiply
(Amount of increase/original whole) x100%

4. A number made up of a whole number and a fraction
prime factorization
constants
Invert second term - then multiply
mixed number

5. Answer to a division problem
less than
greater than
quotient
compatible numbers

6. A fraction whose numerator is greater than its denominator
Original whole +/- amount of change
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Part
improper fraction

7. The largest number in a group of numbers
mixed number
least
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
greatest

8. Not identical or equivalent to
decimal
Last digit divisible by 2
not equal
least common multiple

9. Comparing positive fractions
greater than
Last two digits divisible by 4
perfect square
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

10. Standard deviation: greater if...
proportion
Number of desired outcomes/number of total possible outcomes
Greater spread in values
factor

11. A value that does not change; any number
repeating decimals
constants
Sum of values/number of values
equation

12. Number divisible by 6
whole number
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
sum
Divisible by 2 and 3

13. Simplifying complex fractions: two methods
Original whole +/- amount of change
equation
even number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

14. Probability
rational numbers
mixed 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
Number of desired outcomes/number of total possible outcomes

15. The expression of a number as a product of prime factors; use a factor tree!
Middle value
prime factorization
not equal
Last digit divisible by 2

16. A number with more than two factors
rational numbers
compatible numbers
Last digit 0 or 5
composite number

17. A letter that represents a value that may change
product
Sum of digits divisible by 9
variables
greatest

18. Be identical or equivalent to
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
equal
root numbers

19. The smallest number in a group of numbers
least
Total A/total B
constants
Number of decimal places is total number of decimals places in factors multiplied

20. Absolute value of number
greater than
divisible
Number w/o signs
perfect square

21. Properties of 1 and -1

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22. The answer to a subtraction problem
equal
root numbers
(Amount of increase/original whole) x100%
difference

23. Dividing decimals
number line
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
least
Probability for each event then multiply individual probabilities together

24. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
factor pair
equivalent
divisible
exponents

25. 8x8=64 What is 64?
percent
perfect square
Sum of values/number of values
Divide out largest common factor

26. When a number is larger than the other number. Example 65 > 56
greater than
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
prime factorization
irrational numbers

27. 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
identity property
expression
proportion
ratio

28. Percent decrease
compatible numbers
improper fraction
composite number
(Amount of decrease/original whole) x100%

29. Adding/subtracting fractions
LCM is LCD
estimate
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
compensation

30. Properties of numbers btw -1 and 1

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31. 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)=
Greater spread in values
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
distributive property
quotient

32. The answer to a multiplication problem
expanded form using exponents
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
product
irrational numbers

33. A fraction out of 100 - %
percent
equivalent
improper fraction
LCM is LCD

34. Properties of 0

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35. Number divisible by 9
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
odd
order of operations
Sum of digits divisible by 9

36. 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.
equation
Middle value
compensation
prime number

37. Number divisible by 5
digit
Last digit 0 or 5
proportion
less than

38. An equation showing 2 ratios are equal
compatible numbers
proportion
number line
Sum of digits divisible by 9

39. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
percent
Probability for each event then multiply individual probabilities together
prime number

40. odd + odd
difference
product
even
decimal

41. Median
Middle value
less than
LCM is LCD
range

42. To place a fraction in lowest terms
Sum of digits divisible by 9
simplify
Sum of digits divisible by 3
Multiply by 100%

43. Multiple-event probability
Drop percent - move decimal point two place to left
exponents
evaluate
Probability for each event then multiply individual probabilities together

44. A line for representing and graphing numbers. Each point on the line corresponds to a number.
expression
evaluate
number line
place value

45. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
least common multiple
odd number
greatest common factor
place value

46. A set of operators - numbers - variables and grouping symbols; no equal sign
expression
decimal
Number w/o signs
ratio

47. New whole
expanded form using exponents
common denominator
Probability for each event then multiply individual probabilities together
Original whole +/- amount of change

48. To make a percent
less than
rational numbers
Multiply by 100%
equivalent

49. Number divisible by 3
Value occurring most frequently
perfect square
root numbers
Sum of digits divisible by 3

50. A number that results from multiplying a factor by itself
root numbers
square number
whole number
digit