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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 difference between the greatest and the least numbers in a set of data.
square number
Line up decimal points
range
Invert second term - then multiply

2. The answer to an addition problem
greatest
sum
equation
prime number

3. Comparing decimal fractions
Add zeros to decimals until all decimals have same number of digits
Drop percent - move decimal point two place to left
Divisible by 2 and 3
Multiply by 100%

4. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Divisible by 2 and 3
root numbers
common denominator
Middle value

5. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
expanded form using exponents
Invert second term - then multiply
prime number

6. 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.
LCM is LCD
compensation
not equal
square number

7. Reciprocal of number
inverse property
fraction
1 dividing by number
least

8. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
place value
odd number
mixed number
least

9. Reducing fractions
Divide out largest common factor
Number of decimal places is total number of decimals places in factors multiplied
Value occurring most frequently
Divide by 100%

10. A number that results from multiplying a factor by itself
Add zeros to decimals until all decimals have same number of digits
square number
Reduce diagonally/vertically then multiply numerators and denominators
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

11. Multiplying fractions
root numbers
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
digit
Reduce diagonally/vertically then multiply numerators and denominators

12. To change a percent to a decimal
range
Drop percent - move decimal point two place to left
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Last digit divisible by 2

13. New whole
greatest
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
Last digit 0 or 5
Original whole +/- amount of change

14. Number divisible by 2
Add zeros to decimals until all decimals have same number of digits
range
Last digit divisible by 2
Sum of digits divisible by 3

15. 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
greatest common factor
perfect square
irrational numbers
constants

16. Two factors together that are multiplied to equal a larger number.
fraction
factor pair
place value
percent

17. Properties of numbers btw -1 and 1

18. A number that is multiplied by another number to find a producr
factor
order of operations
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
least common multiple

19. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
odd number
greater than
evaluate

20. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Greater spread in values
order of operations
rational numbers
decimal

21. Standard deviation: greater if...
odd number
Greater spread in values
Probability for each event then multiply individual probabilities together
sum

22. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Probability for each event then multiply individual probabilities together
digit
greatest common factor
exponents

23. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
odd
proportion
simplify
order of operations

24. Adding/subtracting fractions
LCM is LCD
factor pair
mixed number
Reduce diagonally/vertically then multiply numerators and denominators

25. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
place value
prime number
perfect square
expanded form using exponents

26. Mode
range
least
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
Value occurring most frequently

27. To place a fraction in lowest terms
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
simplify
equal
number line

28. 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?
product
denominator
expression
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

29. The smallest number in a group of numbers
least
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
divisibility by 3 rule
Invert second term - then multiply

30. Average value
LCM is LCD
Sum of values/number of values
rational numbers
proportion

31. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
less than
equivalent
odd number
prime number

32. Simplifying complex fractions: two methods
proportion
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
order of operations
Multiply by 100%

33. 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)
associative property
Middle value
range
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

34. 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)
Total A/total B
expanded form using exponents
Invert second term - then multiply
commutative property

35. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
least common multiple
composite number
greatest common factor
terminating decimals

36. Multiple-event probability
Probability for each event then multiply individual probabilities together
value
constants
Number of decimal places is total number of decimals places in factors multiplied

37. To find the answer for; solve
Divide by 100%
even number
terminating decimals
evaluate

38. Relationship in which a number is smaller than another
less than
Sum of values/number of values
Probability for each event then multiply individual probabilities together
compatible numbers

39. 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?
expanded form using exponents
numerator
identity property
Line up decimal points

40. A number with more than two factors
Greater spread in values
root numbers
composite number
Number w/o signs

41. A fraction out of 100 - %
percent
compensation
(Amount of decrease/original whole) x100%
commutative property

42. The answer to a multiplication problem
product
Invert second term - then multiply
greater than
common denominator

43. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
factor pair
expanded form using exponents
Last digit 0 or 5
place value

44. 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
prime number
terminating decimals
inverse property
divisibility by 3 rule

45. Properties of 0

46. odd + even
decimal
odd
Divide by 100%
Last digit 0 or 5

47. Number divisible by 3
Sum of digits divisible by 3
order of operations
least
expanded form using exponents

48. To find a number that is close to an exact answer - E.g. 23+24 is around 50
decimal
estimate
sum
factor pair

49. Answer to a division problem
odd number
quotient
less than
divisibility by 3 rule

50. An equation showing 2 ratios are equal
exponents
composite number
decimal
proportion