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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. 8x8=64 What is 64?
perfect square
inverse property
repeating decimals
Original whole +/- amount of change

2. 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
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
identity property
odd number
numerator

3. Relationship in which a number is smaller than another
Line up decimal points
numerator
variables
less than

4. How much a number is worth
prime number
Reduce diagonally/vertically then multiply numerators and denominators
constants
value

5. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
compensation
equivalent
Reduce diagonally/vertically then multiply numerators and denominators
improper fraction

6. Natural Numbers - Whole Numbers - Integers - Rational Numbers
irrational numbers
range
rational numbers
equation

7. Reducing fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
not equal
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
Divide out largest common factor

8. 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
fraction
Divide out largest common factor
Last two digits divisible by 4

9. Average A per B
equivalent
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Last two digits divisible by 4
Total A/total B

10. A number that is multiplied by another number to find a producr
factor
Line up decimal points
root numbers
compensation

11. The answer to an addition problem
odd number
Line up decimal points
Multiply by 100%
sum

12. A number with more than two factors
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Greater spread in values
Sum of digits divisible by 9
composite number

13. In 4x4=16 - what is 4?
greater than
inverse property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
root numbers

14. The greatest whole number that is a factor of two or more nonzero whole numbers
Part
greatest common factor
place value
expanded form using exponents

15. Adding/subtracting decimals
divisible
compensation
Line up decimal points
prime factorization

16. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
sum
odd
percent

17. Probability
constants
Number of desired outcomes/number of total possible outcomes
mixed number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

18. Mode
evaluate
Value occurring most frequently
proportion
mixed number

19. Standard deviation: greater if...
compatible numbers
Greater spread in values
equivalent
rational numbers

20. Answer to a multiplication problem
quotient
compatible numbers
product
range

21. A number with one or more digits to the right of the decimal point - E.g. .33
common denominator
irrational numbers
constants
decimal

22. A comparison of 2 numbers; one form is a fraction
ratio
Total A/total B
factor pair
irrational numbers

23. Comparing positive fractions
factor pair
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Line up decimal points
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

24. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
Value occurring most frequently
not equal
digit
even number

25. The answer to a multiplication problem
ratio
fraction
product
decimal

26. An equation showing 2 ratios are equal
proportion
Sum of digits divisible by 9
decimal
product

27. A number that results from multiplying a factor by itself
square number
even number
simplify
expression

28. Percent x whole
Probability for each event then multiply individual probabilities together
Part
ratio
(Amount of increase/original whole) x100%

29. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
LCM is LCD
terminating decimals
compatible numbers
Number of decimal places is total number of decimals places in factors multiplied

30. odd + even
Last digit divisible by 2
LCM is LCD
denominator
odd

31. 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
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
inverse property
Divisible by 2 and 3

32. Percent increase
proportion
percent
Part
(Amount of increase/original whole) x100%

33. Number divisible by 9
Sum of digits divisible by 9
sum
associative property
Reduce diagonally/vertically then multiply numerators and denominators

34. Not identical or equivalent to
(Amount of decrease/original whole) x100%
not equal
perfect square
equivalent

35. Multiple-event probability
greatest
Probability for each event then multiply individual probabilities together
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
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

36. The difference between the greatest and the least numbers in a set of data.
prime number
Original whole +/- amount of change
range
expanded form using exponents

37. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
constants
least
fraction
Reduce diagonally/vertically then multiply numerators and denominators

38. Simplifying complex fractions: two methods
Divide out largest common factor
constants
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Invert second term - then multiply

39. Number divisible by 5
Last digit 0 or 5
percent
associative property
factor

40. Number divisible by 4
greatest
commutative property
Last two digits divisible by 4
composite number

41. Adding/subtracting fractions
Number of desired outcomes/number of total possible outcomes
LCM is LCD
Last digit divisible by 2
Sum of digits divisible by 3

42. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Original whole +/- amount of change
variables
divisibility by 3 rule

43. Average value
order of operations
Greater spread in values
Sum of values/number of values
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

44. Absolute value of number
odd
Sum of digits divisible by 9
Number w/o signs
root numbers

45. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
denominator
least common multiple
factor pair
repeating decimals

46. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
odd number
equation
numerator
Sum of values/number of values

47. A fraction whose numerator is greater than its denominator
whole number
expression
improper fraction
Part

48. The answer to a subtraction problem
least
difference
(Amount of increase/original whole) x100%
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

49. Number divisible by 3
square number
Sum of digits divisible by 3
least
LCM is LCD

50. A number made up of a whole number and a fraction
Original whole +/- amount of change
Number w/o signs
mixed number
least common multiple