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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. Reducing fractions
Divide out largest common factor
divisible
associative property
Add zeros to decimals until all decimals have same number of digits

2. Number divisible by 6
denominator
ratio
Divisible by 2 and 3
Divide by 100%

3. Comparing decimal fractions
ratio
Add zeros to decimals until all decimals have same number of digits
associative property
greater than

4. Number divisible by 5
distributive property
ratio
difference
Last digit 0 or 5

5. Number divisible by 4
prime number
Last two digits divisible by 4
expanded form using exponents
percent

6. 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
1 dividing by number
LCM is LCD
product
identity property

7. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
equal
divisible
Divisible by 2 and 3
repeating decimals

8. The answer to an addition problem
greatest common factor
Sum of digits divisible by 9
sum
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

9. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
perfect square
expanded form using exponents
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Last digit 0 or 5

10. An equation showing 2 ratios are equal
quotient
greatest common factor
number line
proportion

11. Able to be divided evenly (without a remainder)
divisible
expression
product
LCM is LCD

12. Absolute value of number
Number w/o signs
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Sum of digits divisible by 9
factor

13. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
order of operations
Add zeros to decimals until all decimals have same number of digits
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

14. Dividing decimals
distributive property
odd number
Total A/total B
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

15. Adding/subtracting fractions
mixed number
repeating decimals
LCM is LCD
Multiply by 100%

16. Multiple-event probability
estimate
Probability for each event then multiply individual probabilities together
Divide by 100%
Add zeros to decimals until all decimals have same number of digits

17. Multiplying fractions
Greater spread in values
greatest
divisibility by 3 rule
Reduce diagonally/vertically then multiply numerators and denominators

18. A letter that represents a value that may change
Sum of digits divisible by 9
expression
(Amount of decrease/original whole) x100%
variables

19. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
expression
odd number
whole number
Value occurring most frequently

20. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
numerator
compensation
expanded form using exponents
divisibility by 3 rule

21. A fraction out of 100 - %
estimate
difference
percent
commutative property

22. odd + odd
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
even
fraction
associative property

23. Properties of 0

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24. Relationship in which a number is smaller than another
less than
evaluate
fraction
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

25. Average A per B
ratio
variables
estimate
Total A/total B

26. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
constants
(Amount of decrease/original whole) x100%
Drop percent - move decimal point two place to left

27. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Probability for each event then multiply individual probabilities together
order of operations
simplify
least

28. To make a percent
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
variables
digit
Multiply by 100%

29. Properties of numbers btw -1 and 1

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30. How much a number is worth
constants
value
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
compensation

31. Adding/subtracting decimals
equal
denominator
Line up decimal points
ratio

32. Reciprocal of number
1 dividing by number
Greater spread in values
difference
expression

33. The answer to a subtraction problem
difference
place value
mixed number
Probability for each event then multiply individual probabilities together

34. Percent decrease
inverse property
mixed number
Value occurring most frequently
(Amount of decrease/original whole) x100%

35. The number at the top of a fraction; stands for the parts of a set you are considering - E.g. 3/4 What position is 3?
numerator
odd
associative property
Last two digits divisible by 4

36. The expression of a number as a product of prime factors; use a factor tree!
Line up decimal points
product
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
prime factorization

37. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
root numbers
Last two digits divisible by 4
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

38. To find a number that is close to an exact answer - E.g. 23+24 is around 50
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
estimate
prime number

39. Standard deviation: greater if...
Greater spread in values
expression
mixed number
Invert second term - then multiply

40. 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
variables
(Amount of increase/original whole) x100%
Divisible by 2 and 3

41. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
Line up decimal points
Number of desired outcomes/number of total possible outcomes
Divide out largest common factor

42. Number divisible by 3
Last digit 0 or 5
difference
Sum of digits divisible by 3
place value

43. 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
Add zeros to decimals until all decimals have same number of digits
irrational numbers
whole number
ratio

44. A fraction whose numerator is greater than its denominator
evaluate
odd number
equal
improper fraction

45. Two factors together that are multiplied to equal a larger number.
Original whole +/- amount of change
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
factor pair
Last two digits divisible by 4

46. The smallest number in a group of numbers
odd number
least common multiple
least
Line up decimal points

47. 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.
irrational numbers
compensation
Divisible by 2 and 3
equivalent

48. The answer to a multiplication problem
simplify
decimal
product
greater than

49. 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)=
distributive property
square number
Reduce diagonally/vertically then multiply numerators and denominators
ratio

50. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
value
digit
rational numbers
order of operations