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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. Number divisible by 5
Last digit 0 or 5
root numbers
digit
greatest

2. 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
least
Last two digits divisible by 4
irrational numbers
denominator

3. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
terminating decimals
Number of decimal places is total number of decimals places in factors multiplied
(Amount of decrease/original whole) x100%

4. odd + odd
less than
Greater spread in values
even
odd

5. Adding/subtracting fractions
LCM is LCD
Reduce diagonally/vertically then multiply numerators and denominators
equation
decimal

6. Standard deviation: greater if...
1 dividing by number
Greater spread in values
proportion
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

7. A number that is multiplied by another number to find a producr
expression
estimate
factor
inverse property

8. Number divisible by 2
Number of decimal places is total number of decimals places in factors multiplied
equation
Last digit divisible by 2
denominator

9. Relationship in which a number is smaller than another
place value
less than
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 by 100%

10. Probability
Probability for each event then multiply individual probabilities together
Number of desired outcomes/number of total possible outcomes
mixed number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

11. 8x8=64 What is 64?
inverse property
perfect square
commutative property
range

12. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
compatible numbers
Drop percent - move decimal point two place to left
equivalent
range

13. Percent increase
LCM is LCD
(Amount of increase/original whole) x100%
product
mixed number

14. To make a percent
root numbers
terminating decimals
Multiply by 100%
place value

15. 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.
rational numbers
LCM is LCD
compensation
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

16. Two expressions that are set equal to each other; a number sentence with an equal sign
digit
equation
(Amount of decrease/original whole) x100%
expanded form using exponents

17. A property indicating a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses - such as a(b + c) = ab + ac - or 7x (4+1)=
(Amount of decrease/original whole) x100%
place value
Reduce diagonally/vertically then multiply numerators and denominators
distributive property

18. Natural Numbers - Whole Numbers - Integers - Rational Numbers
equal
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
rational numbers
perfect square

19. A letter that represents a value that may change
Line up decimal points
Value occurring most frequently
variables
prime factorization

20. Dividing fractions
least
Greater spread in values
Invert second term - then multiply
Add zeros to decimals until all decimals have same number of digits

21. A shortcut for writing repeated multiplication
proportion
exponents
Number w/o signs
improper fraction

22. Multiplying fractions
rational numbers
Multiply by 100%
Reduce diagonally/vertically then multiply numerators and denominators
exponents

23. A number with one or more digits to the right of the decimal point - E.g. .33
greater than
decimal
Divide out largest common factor
improper fraction

24. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
greater than
Last two digits divisible by 4
fraction

25. Average A per B
compute
prime factorization
Sum of values/number of values
Total A/total B

26. The smallest number in a group of numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
least
Middle value
denominator

27. Multiplying decimals
Probability for each event then multiply individual probabilities together
perfect square
Number of decimal places is total number of decimals places in factors multiplied
range

28. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
denominator
compensation
Add zeros to decimals until all decimals have same number of digits

29. To find the answer for; solve
divisible
Invert second term - then multiply
Line up decimal points
evaluate

30. Percent x whole
Part
equal
denominator
square number

31. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
(Amount of decrease/original whole) x100%
Add zeros to decimals until all decimals have same number of digits
exponents
even number

32. When a number is larger than the other number. Example 65 > 56
(Amount of decrease/original whole) x100%
number line
greater than
square number

33. Absolute value of number
sum
identity property
irrational numbers
Number w/o signs

34. To find a number that is close to an exact answer - E.g. 23+24 is around 50
expanded form using exponents
estimate
odd
variables

35. Comparing positive fractions
Total A/total B
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
percent
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

36. Be identical or equivalent to
least common multiple
equal
Add zeros to decimals until all decimals have same number of digits
evaluate

37. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
(Amount of decrease/original whole) x100%
terminating decimals
commutative property
equal

38. Two factors together that are multiplied to equal a larger number.
factor pair
Last digit 0 or 5
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Divide by 100%

39. Simplifying complex fractions: two methods
Reduce diagonally/vertically then multiply numerators and denominators
order of operations
difference
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

40. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
value
Last two digits divisible by 4
fraction

41. A fraction out of 100 - %
Number w/o signs
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
percent
improper fraction

42. Properties of 1 and -1

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43. Dividing decimals
perfect square
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
greater than
irrational numbers

44. A value that does not change; any number
composite number
constants
Number of decimal places is total number of decimals places in factors multiplied
distributive property

45. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Divisible by 2 and 3
Last two digits divisible by 4
prime number
Last digit 0 or 5

46. 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)
ratio
improper fraction
Add zeros to decimals until all decimals have same number of digits
commutative property

47. The difference between the greatest and the least numbers in a set of data.
range
Last two digits divisible by 4
greater than
decimal

48. Average value
Sum of values/number of values
Line up decimal points
least common multiple
equivalent

49. Properties of 0

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50. Properties of numbers btw -1 and 1

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