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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 smallest number in a group of numbers
1 dividing by number
Add zeros to decimals until all decimals have same number of digits
least
odd number

2. Two factors together that are multiplied to equal a larger number.
difference
less than
factor pair
equation

3. The largest number in a group of numbers
greatest
equal
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
least common multiple

4. Relationship in which a number is smaller than another
(Amount of decrease/original whole) x100%
ratio
Part
less than

5. 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)
rational numbers
root numbers
associative property
least

6. Number divisible by 5
Last digit 0 or 5
Number of desired outcomes/number of total possible outcomes
identity property
expanded form using exponents

7. Average value
denominator
composite number
Sum of values/number of values
Middle value

8. Adding/subtracting decimals
Line up decimal points
identity property
place value
Value occurring most frequently

9. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
greatest common factor
equivalent
improper fraction
even number

10. A value that does not change; any number
greater than
constants
Add zeros to decimals until all decimals have same number of digits
Total A/total B

11. Multiplying fractions
odd number
factor
Reduce diagonally/vertically then multiply numerators and denominators
irrational numbers

12. Percent decrease
commutative property
(Amount of decrease/original whole) x100%
irrational numbers
Drop percent - move decimal point two place to left

13. Standard deviation: greater if...
prime number
irrational numbers
Greater spread in values
greatest common factor

14. Reducing fractions
LCM is LCD
Divide out largest common factor
simplify
estimate

15. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
variables
Number w/o signs
even number
terminating decimals

16. The answer to an addition problem
greatest common factor
sum
even
divisibility by 3 rule

17. Comparing decimal fractions
numerator
Invert second term - then multiply
perfect square
Add zeros to decimals until all decimals have same number of digits

18. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
ratio
numerator
expanded form using exponents
prime number

19. A fraction out of 100 - %
percent
range
fraction
common denominator

20. A comparison of 2 numbers; one form is a fraction
Total A/total B
ratio
Greater spread in values
repeating decimals

21. 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?
Drop percent - move decimal point two place to left
greatest
Divide out largest common factor
numerator

22. Absolute value of number
number line
equivalent
Number w/o signs
order of operations

23. Reciprocal of number
equation
number line
composite number
1 dividing by number

24. 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
inverse property
(Amount of increase/original whole) x100%
factor
greater than

25. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
composite number
divisible
equal
terminating decimals

26. A letter that represents a value that may change
simplify
not equal
variables
product

27. Average A per B
Total A/total B
greatest common factor
even number
repeating decimals

28. Comparing positive fractions
proportion
not equal
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Number of desired outcomes/number of total possible outcomes

29. odd + odd
greatest
even
1 dividing by number
Last digit divisible by 2

30. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Number of decimal places is total number of decimals places in factors multiplied
whole number
Last digit 0 or 5
place value

31. 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)
equivalent
commutative property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Greater spread in values

32. A number made up of a whole number and a fraction
common denominator
mixed number
equation
Sum of values/number of values

33. New whole
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
mixed number
proportion
Original whole +/- amount of change

34. Dividing fractions
terminating decimals
identity property
Invert second term - then multiply
divisible

35. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
even number
prime factorization
Add zeros to decimals until all decimals have same number of digits
divisibility by 3 rule

36. Number divisible by 2
evaluate
Divide by 100%
Last digit divisible by 2
commutative property

37. To find the answer for; solve
prime number
not equal
rational numbers
evaluate

38. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Last digit divisible by 2
common denominator
order of operations
square number

39. A number with more than two factors
compatible numbers
composite number
irrational numbers
improper fraction

40. Median
Middle value
associative property
divisibility by 3 rule
(Amount of decrease/original whole) x100%

41. 1/5 + 1/4=4/20 +5/20 and 20 is the...
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
common denominator
equal
commutative property

42. Percent increase
fraction
(Amount of increase/original whole) x100%
whole number
denominator

43. To change a percent to a decimal
Drop percent - move decimal point two place to left
quotient
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
irrational numbers

44. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Sum of values/number of values
fraction
composite number
estimate

45. Probability
Sum of values/number of values
Number of desired outcomes/number of total possible outcomes
divisible
greatest common factor

46. Simplifying complex fractions: two methods
common denominator
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
irrational numbers
Last two digits divisible by 4

47. A shortcut for writing repeated multiplication
expanded form using exponents
evaluate
exponents
composite number

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.
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
compensation
composite number
percent

49. Dividing decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Line up decimal points
commutative property
constants

50. A number that is multiplied by another number to find a producr
Last two digits divisible by 4
Probability for each event then multiply individual probabilities together
factor
variables