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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 that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
denominator
Number of decimal places is total number of decimals places in factors multiplied
least common multiple
product

2. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Sum of digits divisible by 3
place value
compatible numbers
greatest common factor

3. A number that is multiplied by another number to find a producr
Value occurring most frequently
Add zeros to decimals until all decimals have same number of digits
prime factorization
factor

4. The answer to a subtraction problem
divisibility by 3 rule
common denominator
difference
simplify

5. 8x8=64 What is 64?
product
range
factor
perfect square

6. Multiplying decimals
square number
Number of decimal places is total number of decimals places in factors multiplied
rational numbers
Divide by 100%

7. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
divisibility by 3 rule
difference
Original whole +/- amount of change
product

8. An equation showing 2 ratios are equal
proportion
whole number
least
Value occurring most frequently

9. To change a percent to a decimal
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
improper fraction
fraction
Drop percent - move decimal point two place to left

10. When a number is larger than the other number. Example 65 > 56
greater than
square number
rational numbers
fraction

11. Number divisible by 6
ratio
expanded form using exponents
Divisible by 2 and 3
perfect square

12. Properties of 0

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13. Adding/subtracting decimals
Divide by 100%
Line up decimal points
inverse property
odd number

14. The smallest number in a group of numbers
perfect square
rational numbers
least
less than

15. A comparison of 2 numbers; one form is a fraction
compatible numbers
distributive property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
ratio

16. Reducing fractions
Divide out largest common factor
Sum of digits divisible by 3
divisibility by 3 rule
Line up decimal points

17. 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
common denominator
inverse property
Line up decimal points

18. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
product
range
simplify
even number

19. Comparing decimal fractions
range
expression
Add zeros to decimals until all decimals have same number of digits
square number

20. Probability
denominator
Number of desired outcomes/number of total possible outcomes
order of operations
compensation

21. A fraction out of 100 - %
not equal
odd
percent
compensation

22. The answer to a multiplication problem
inverse property
product
estimate
distributive property

23. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Middle value
Probability for each event then multiply individual probabilities together
less than

24. Answer to a multiplication problem
least
(Amount of decrease/original whole) x100%
product
greatest

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
prime factorization
greatest common factor
commutative property
fraction

26. 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)
denominator
greatest
associative property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

27. Multiplying fractions
prime number
Reduce diagonally/vertically then multiply numerators and denominators
divisibility by 3 rule
perfect square

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?
even number
denominator
decimal
Number of decimal places is total number of decimals places in factors multiplied

29. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Divide out largest common factor
greatest
repeating decimals
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

30. Simplifying complex fractions: two methods
Divide out largest common factor
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
compensation
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

31. 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
least common multiple
Divide out largest common factor
terminating decimals

32. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
odd
irrational numbers
equal
expanded form using exponents

33. A number with more than two factors
composite number
Original whole +/- amount of change
Total A/total B
least

34. Adding/subtracting fractions
Number of decimal places is total number of decimals places in factors multiplied
constants
LCM is LCD
prime number

35. A number that results from multiplying a factor by itself
square number
Middle value
proportion
Total A/total B

36. Absolute value of number
Total A/total B
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Number w/o signs
proportion

37. 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.
digit
compensation
Divide by 100%
Sum of values/number of values

38. Properties of 1 and -1

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39. The largest number in a group of numbers
greatest
equation
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
square number

40. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
greatest common factor
irrational numbers
order of operations
identity property

41. Average A per B
product
denominator
greatest common factor
Total A/total B

42. The greatest whole number that is a factor of two or more nonzero whole numbers
terminating decimals
greatest common factor
irrational numbers
factor pair

43. Dividing fractions
least
digit
variables
Invert second term - then multiply

44. Not identical or equivalent to
Sum of values/number of values
not equal
compatible numbers
Total A/total B

45. A letter that represents a value that may change
simplify
number line
variables
root numbers

46. Two factors together that are multiplied to equal a larger number.
denominator
associative property
factor pair
identity property

47. The difference between the greatest and the least numbers in a set of data.
Sum of digits divisible by 3
square number
Number w/o signs
range

48. Relationship in which a number is smaller than another
Part
associative property
simplify
less than

49. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Divisible by 2 and 3
rational numbers
1 dividing by number
equation

50. To place a fraction in lowest terms
Sum of digits divisible by 9
simplify
least common multiple
divisibility by 3 rule