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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. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
constants
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
(Amount of decrease/original whole) x100%

2. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
evaluate
equivalent
Value occurring most frequently
Divide by 100%

3. A fraction out of 100 - %
factor
Middle value
greatest common factor
percent

4. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
factor
denominator
Add zeros to decimals until all decimals have same number of digits

5. An equation showing 2 ratios are equal
LCM is LCD
proportion
odd number
odd

6. Average value
not equal
factor
Sum of values/number of values
Last digit 0 or 5

7. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Sum of digits divisible by 9
sum
simplify
rational numbers

8. A set of operators - numbers - variables and grouping symbols; no equal sign
compensation
Number of desired outcomes/number of total possible outcomes
expression
denominator

9. Dividing fractions
terminating decimals
factor pair
Invert second term - then multiply
Divisible by 2 and 3

10. Dividing decimals
compatible numbers
commutative property
exponents
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

11. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
place value
variables
LCM is LCD
improper fraction

12. Number divisible by 2
Greater spread in values
Last digit divisible by 2
Reduce diagonally/vertically then multiply numerators and denominators
greatest common factor

13. The answer to a multiplication problem
Number of decimal places is total number of decimals places in factors multiplied
Sum of digits divisible by 9
product
associative property

14. Answer to a division problem
equal
number line
quotient
prime factorization

15. Standard deviation: greater if...
numerator
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
Greater spread in values
least

16. A comparison of 2 numbers; one form is a fraction
ratio
greatest
Last two digits divisible by 4
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

17. 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
Last digit 0 or 5
Greater spread in values
distributive property

18. How much a number is worth
exponents
greatest
value
Original whole +/- amount of change

19. 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
irrational numbers
distributive property
product
order of operations

20. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
equivalent
estimate
difference
whole number

21. A number with one or more digits to the right of the decimal point - E.g. .33
digit
decimal
identity property
divisible

22. Two expressions that are set equal to each other; a number sentence with an equal sign
number line
percent
exponents
equation

23. odd + even
LCM is LCD
odd
least common multiple
factor pair

24. 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?
repeating decimals
Line up decimal points
numerator
place value

25. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
fraction
equation
composite number
odd number

26. Able to be divided evenly (without a remainder)
root numbers
composite number
divisible
compute

27. The property which allows you to add a number's opposite to it and always get 0 - The relationship of addition to subtraction or multiplication to division
commutative property
Number of desired outcomes/number of total possible outcomes
identity property
inverse property

28. To drop a percent
Divide by 100%
composite 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
equal

29. Multiplying fractions
Reduce diagonally/vertically then multiply numerators and denominators
odd number
Add zeros to decimals until all decimals have same number of digits
Divide out largest common factor

30. Percent x whole
ratio
mixed number
Part
numerator

31. To find a number that is close to an exact answer - E.g. 23+24 is around 50
estimate
Line up decimal points
identity property
Total A/total B

32. Properties of numbers btw -1 and 1

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33. Reducing fractions
compensation
variables
Divide out largest common factor
common denominator

34. Number divisible by 6
least
product
(Amount of increase/original whole) x100%
Divisible by 2 and 3

35. To make a percent
compute
Multiply by 100%
Part
quotient

36. The difference between the greatest and the least numbers in a set of data.
range
compensation
sum
equal

37. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
number line
repeating decimals
factor
inverse property

38. Multiple-event probability
repeating decimals
Probability for each event then multiply individual probabilities together
ratio
common denominator

39. To change a percent to a decimal
exponents
Drop percent - move decimal point two place to left
prime factorization
identity property

40. Number divisible by 9
(Amount of increase/original whole) x100%
irrational numbers
estimate
Sum of digits divisible by 9

41. A number that results from multiplying a factor by itself
square number
fraction
expanded form using exponents
decimal

42. The answer to a subtraction problem
expression
difference
Sum of digits divisible by 3
exponents

43. Reciprocal of number
1 dividing by number
difference
least common multiple
(Amount of increase/original whole) x100%

44. Number divisible by 3
equivalent
Sum of digits divisible by 3
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
LCM is LCD

45. Properties of 0

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46. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
expanded form using exponents
Original whole +/- amount of change
compatible numbers
Last two digits divisible by 4

47. Adding/subtracting fractions
fraction
factor pair
LCM is LCD
rational numbers

48. 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?
identity property
LCM is LCD
compensation
denominator

49. Comparing positive fractions
mixed number
greatest
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

50. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Part
divisibility by 3 rule
greatest
simplify