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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. Properties of numbers btw -1 and 1

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2. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
decimal
Multiply by 100%
expanded form using exponents
repeating decimals

3. A shortcut for writing repeated multiplication
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
exponents
equation
percent

4. Average A per B
Divide out largest common factor
Total A/total B
root numbers
Number of decimal places is total number of decimals places in factors multiplied

5. New whole
mixed number
Divide out largest common factor
Original whole +/- amount of change
place value

6. 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
greatest common factor
Number of decimal places is total number of decimals places in factors multiplied
odd number

7. A value that does not change; any number
terminating decimals
Reduce diagonally/vertically then multiply numerators and denominators
constants
odd number

8. odd + odd
expression
even
evaluate
not equal

9. To drop a percent
Divide by 100%
place value
commutative property
Number of desired outcomes/number of total possible outcomes

10. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
quotient
Add zeros to decimals until all decimals have same number of digits
compatible numbers
least common multiple

11. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Line up decimal points
prime factorization
fraction
constants

12. To place a fraction in lowest terms
quotient
Original whole +/- amount of change
simplify
exponents

13. 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)
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
commutative property
composite number
Reduce diagonally/vertically then multiply numerators and denominators

14. 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.
(Amount of decrease/original whole) x100%
expression
Part
compensation

15. The answer to an addition problem
sum
Last digit 0 or 5
improper fraction
expression

16. Absolute value of number
Number w/o signs
Part
odd number
difference

17. The smallest number in a group of numbers
Invert second term - then multiply
least
expanded form using exponents
sum

18. The greatest whole number that is a factor of two or more nonzero whole numbers
Value occurring most frequently
greatest common factor
percent
irrational numbers

19. In 4x4=16 - what is 4?
even
root numbers
Middle value
estimate

20. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
Probability for each event then multiply individual probabilities together
expanded form using exponents
expression
Last digit divisible by 2

21. A number that results from multiplying a factor by itself
even number
Divide by 100%
square number
place value

22. To make a percent
Multiply by 100%
constants
divisibility by 3 rule
least common multiple

23. odd + even
odd
Line up decimal points
greater than
mixed number

24. Adding/subtracting fractions
least common multiple
proportion
Multiply by 100%
LCM is LCD

25. Comparing positive fractions
Number of decimal places is total number of decimals places in factors multiplied
mixed number
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
terminating decimals

26. Answer to a multiplication problem
Greater spread in values
product
greatest common factor
composite number

27. A comparison of 2 numbers; one form is a fraction
identity property
Invert second term - then multiply
ratio
Drop percent - move decimal point two place to left

28. Number divisible by 9
compatible numbers
value
Sum of digits divisible by 9
associative property

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
simplify
irrational numbers
sum
Divisible by 2 and 3

30. Percent x whole
Part
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
equivalent
denominator

31. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
product
divisibility by 3 rule
inverse property
repeating decimals

32. Multiplying decimals
Multiply by 100%
Number of decimal places is total number of decimals places in factors multiplied
divisible
Divide by 100%

33. 8x8=64 What is 64?
decimal
sum
perfect square
compensation

34. Able to be divided evenly (without a remainder)
LCM is LCD
expression
divisible
prime number

35. Percent decrease
Divide out largest common factor
(Amount of decrease/original whole) x100%
greater than
Line up decimal points

36. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
1 dividing by number
numerator
order of operations
Total A/total B

37. The answer to a subtraction problem
greatest
Line up decimal points
Reduce diagonally/vertically then multiply numerators and denominators
difference

38. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
Greater spread in values
place value
equal

39. Dividing decimals
product
order of operations
evaluate
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

40. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
difference
repeating decimals
Original whole +/- amount of change

41. To find a number that is close to an exact answer - E.g. 23+24 is around 50
odd number
expression
estimate
least

42. Multiple-event probability
Original whole +/- amount of change
composite number
quotient
Probability for each event then multiply individual probabilities together

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

44. Number divisible by 5
expression
Last digit 0 or 5
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
odd number

45. Not identical or equivalent to
not equal
place value
Multiply by 100%
Middle value

46. A fraction out of 100 - %
percent
associative property
Divisible by 2 and 3
expanded form using exponents

47. When a number is larger than the other number. Example 65 > 56
Sum of values/number of values
greater than
inverse property
equal

48. A number made up of a whole number and a fraction
mixed number
LCM is LCD
distributive property
equivalent

49. Comparing decimal fractions
product
percent
Add zeros to decimals until all decimals have same number of digits
place value

50. Two factors together that are multiplied to equal a larger number.
greatest common factor
Divide by 100%
exponents
factor pair