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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. Simplifying complex fractions: two methods
Last digit divisible by 2
irrational numbers
composite number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

2. Mode
Divide out largest common factor
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
Value occurring most frequently
inverse property

3. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
commutative property
Middle value
odd number
Number of decimal places is total number of decimals places in factors multiplied

4. 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
factor
divisibility by 3 rule
odd number

5. Number divisible by 2
Last digit divisible by 2
divisible
Invert second term - then multiply
(Amount of increase/original whole) x100%

6. 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)
Number w/o signs
commutative property
root numbers
sum

7. A number that is multiplied by another number to find a producr
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Number of decimal places is total number of decimals places in factors multiplied
less than
factor

8. How much a number is worth
value
quotient
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
mixed number

9. 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
Last digit 0 or 5
Divide by 100%
identity property
place value

10. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
even number
Divisible by 2 and 3
compensation
exponents

11. Median
Middle value
equivalent
square number
perfect square

12. Reciprocal of number
constants
Last two digits divisible by 4
product
1 dividing by number

13. A comparison of 2 numbers; one form is a fraction
identity property
root numbers
ratio
prime number

14. Answer to a multiplication problem
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
decimal
product
least

15. Properties of numbers btw -1 and 1

16. A number that results from multiplying a factor by itself
numerator
even
place value
square number

17. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
constants
Part
place value

18. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
Drop percent - move decimal point two place to left
compensation
expanded form using exponents
Divide out largest common factor

19. A letter that represents a value that may change
commutative property
variables
distributive property
associative property

20. 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
numerator
Drop percent - move decimal point two place to left
perfect square
inverse property

21. Average value
Sum of values/number of values
Sum of digits divisible by 9
rational numbers
sum

22. Able to be divided evenly (without a remainder)
Middle value
root numbers
divisible
LCM is LCD

23. To drop a percent
expression
Add zeros to decimals until all decimals have same number of digits
LCM is LCD
Divide by 100%

24. Not identical or equivalent to
Line up decimal points
compute
square number
not equal

25. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
common denominator
Last two digits divisible by 4
square number
least common multiple

26. When a number is larger than the other number. Example 65 > 56
greater than
common denominator
divisible
Divide by 100%

27. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
exponents
prime number
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
greater than

28. Average A per B
Invert second term - then multiply
(Amount of increase/original whole) x100%
Total A/total B
terminating decimals

29. Number divisible by 9
denominator
Sum of digits divisible by 9
least
Last two digits divisible by 4

30. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Value occurring most frequently
estimate
mixed number
Sum of digits divisible by 3

31. Properties of 0

32. A number made up of a whole number and a fraction
mixed number
inverse property
Add zeros to decimals until all decimals have same number of digits
less than

33. Adding/subtracting fractions
LCM is LCD
least
Number of decimal places is total number of decimals places in factors multiplied
Greater spread in values

34. Number divisible by 3
estimate
compatible numbers
Sum of digits divisible by 3
Divide out largest common factor

35. A shortcut for writing repeated multiplication
Invert second term - then multiply
greatest common factor
compensation
exponents

36. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
irrational numbers
Value occurring most frequently
divisibility by 3 rule
equivalent

37. Properties of 1 and -1

38. A set of operators - numbers - variables and grouping symbols; no equal sign
Reduce diagonally/vertically then multiply numerators and denominators
expression
irrational numbers
Add zeros to decimals until all decimals have same number of digits

39. Multiplying decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
divisible
exponents
Number of decimal places is total number of decimals places in factors multiplied

40. The answer to a multiplication problem
ratio
even number
product
quotient

41. The answer to a subtraction problem
Probability for each event then multiply individual probabilities together
estimate
proportion
difference

42. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
place value
greater than
constants
equal

43. The smallest number in a group of numbers
factor pair
digit
least
improper fraction

44. The largest number in a group of numbers
divisibility by 3 rule
composite number
rational numbers
greatest

45. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
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
improper fraction
estimate

46. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Last digit 0 or 5
denominator
terminating decimals
Last two digits divisible by 4

47. Reducing fractions
Divide out largest common factor
difference
even
simplify

48. To place a fraction in lowest terms
Sum of digits divisible by 9
square number
simplify
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

49. The greatest whole number that is a factor of two or more nonzero whole numbers
Total A/total B
greatest common factor
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
odd

50. To perform a calculation - E.g. 2+2=4
number line
composite number
1 dividing by number
compute