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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. The largest number in a group of numbers
greatest
least
Value occurring most frequently
prime number

2. A number with more than two factors
constants
even
composite number
Divide out largest common factor

3. Two expressions that are set equal to each other; a number sentence with an equal sign
Line up decimal points
Last digit 0 or 5
equation
simplify

4. A number with one or more digits to the right of the decimal point - E.g. .33
exponents
decimal
rational numbers
factor pair

5. New whole
value
odd number
Original whole +/- amount of change
identity property

6. Multiplying fractions
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
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
Reduce diagonally/vertically then multiply numerators and denominators

7. The answer to a subtraction problem
commutative property
Middle value
difference
less than

8. A number that results from multiplying a factor by itself
Divisible by 2 and 3
greatest common factor
Divide by 100%
square number

9. 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
repeating decimals
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
identity property
inverse property

10. Number divisible by 3
Add zeros to decimals until all decimals have same number of digits
Sum of digits divisible by 3
range
1 dividing by number

11. Simplifying complex fractions: two methods
associative property
difference
factor pair
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

12. Relationship in which a number is smaller than another
digit
common denominator
Sum of digits divisible by 9
less than

13. 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)=
rational numbers
decimal
Divide by 100%
distributive property

14. Multiplying decimals
divisibility by 3 rule
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
Number of decimal places is total number of decimals places in factors multiplied
Total A/total B

15. Number divisible by 9
number line
Sum of digits divisible by 9
Multiply by 100%
difference

16. Answer to a multiplication problem
less than
Sum of digits divisible by 3
common denominator
product

17. How much a number is worth
common denominator
Invert second term - then multiply
quotient
value

18. Mode
1 dividing by number
Greater spread in values
compensation
Value occurring most frequently

19. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
greatest
associative property
Drop percent - move decimal point two place to left

20. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
Reduce diagonally/vertically then multiply numerators and denominators
sum
expanded form using exponents
odd

21. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
inverse property
difference
Probability for each event then multiply individual probabilities together
terminating decimals

22. 8x8=64 What is 64?
commutative property
perfect square
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Sum of values/number of values

23. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Divide by 100%
Line up decimal points
least

24. Percent decrease
irrational numbers
(Amount of decrease/original whole) x100%
equation
compatible numbers

25. 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)
distributive property
Last digit 0 or 5
Original whole +/- amount of change
commutative property

26. Percent x whole
Value occurring most frequently
decimal
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
Part

27. Multiple-event probability
Probability for each event then multiply individual probabilities together
variables
least
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

28. Properties of 0

29. To change a percent to a decimal
terminating decimals
Drop percent - move decimal point two place to left
improper fraction
Original whole +/- amount of change

30. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
1 dividing by number
commutative property
greater than

31. A comparison of 2 numbers; one form is a fraction
not equal
Sum of digits divisible by 9
ratio
Number of decimal places is total number of decimals places in factors multiplied

32. Reducing fractions
whole number
commutative property
prime factorization
Divide out largest common factor

33. The expression of a number as a product of prime factors; use a factor tree!
prime factorization
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
numerator
range

34. The smallest number in a group of numbers
least
distributive property
Value occurring most frequently
not equal

35. Number divisible by 4
Last two digits divisible by 4
Divide out largest common factor
simplify
divisibility by 3 rule

36. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Reduce diagonally/vertically then multiply numerators and denominators
divisibility by 3 rule
Last digit 0 or 5
Line up decimal points

37. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Divide out largest common factor
compatible numbers
factor pair
Line up decimal points

38. A fraction whose numerator is greater than its denominator
factor pair
number line
improper fraction
exponents

39. Two factors together that are multiplied to equal a larger number.
factor pair
evaluate
repeating decimals
even

40. Properties of 1 and -1

41. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
Part
Reduce diagonally/vertically then multiply numerators and denominators
Number w/o signs

42. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
inverse property
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
even number
digit

43. The difference between the greatest and the least numbers in a set of data.
prime factorization
range
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
simplify

44. 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)
Last digit 0 or 5
associative property
even number
square number

45. Properties of numbers btw -1 and 1

46. When a number is larger than the other number. Example 65 > 56
estimate
number line
improper fraction
greater than

47. 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?
odd
denominator
whole number
proportion

48. 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.
compensation
associative property
inverse property
constants

49. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Total A/total B
order of operations
decimal
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

50. To drop a percent
Divide by 100%
estimate
greater than
fraction