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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. A number that results from multiplying a factor by itself
square number
prime number
improper fraction
equation

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
product
irrational numbers
divisibility by 3 rule
Reduce diagonally/vertically then multiply numerators and denominators

3. 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.
Number of decimal places is total number of decimals places in factors multiplied
exponents
compensation
repeating decimals

4. Number divisible by 4
rational numbers
Last two digits divisible by 4
1 dividing by number
place value

5. Able to be divided evenly (without a remainder)
least common multiple
Last digit divisible by 2
Number of decimal places is total number of decimals places in factors multiplied
divisible

6. 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
inverse property
Drop percent - move decimal point two place to left
irrational numbers

7. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
improper fraction
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
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
order of operations

8. Number divisible by 2
identity property
variables
Last digit divisible by 2
Sum of digits divisible by 9

9. Dividing fractions
Invert second term - then multiply
compatible numbers
constants
root numbers

10. Dividing decimals
prime number
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
composite number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

11. The expression of a number as a product of prime factors; use a factor tree!
Number w/o signs
compute
prime factorization
Invert second term - then multiply

12. The answer to a subtraction problem
difference
composite number
Divide out largest common factor
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

13. A line for representing and graphing numbers. Each point on the line corresponds to a number.
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
number line
equal

14. To change a percent to a decimal
whole number
mixed number
Part
Drop percent - move decimal point two place to left

15. Number divisible by 6
Line up decimal points
Divisible by 2 and 3
expanded form using exponents
perfect square

16. The smallest number in a group of numbers
product
least
compensation
root numbers

17. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
fraction
sum
Total A/total B

18. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
Add zeros to decimals until all decimals have same number of digits
(Amount of decrease/original whole) x100%
denominator
equivalent

19. Percent x whole
Part
whole number
commutative property
difference

20. To drop a percent
simplify
Value occurring most frequently
Number of desired outcomes/number of total possible outcomes
Divide by 100%

21. Multiplying decimals
compensation
digit
Divide by 100%
Number of decimal places is total number of decimals places in factors multiplied

22. Two expressions that are set equal to each other; a number sentence with an equal sign
Reduce diagonally/vertically then multiply numerators and denominators
equation
mixed number
proportion

23. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
evaluate
compute
decimal

24. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
odd number
odd
compatible numbers
divisible

25. A fraction whose numerator is greater than its denominator
(Amount of increase/original whole) x100%
improper fraction
Part
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

26. Multiplying fractions
rational numbers
Original whole +/- amount of change
Reduce diagonally/vertically then multiply numerators and denominators
odd number

27. A number with more than two factors
even
proportion
variables
composite number

28. A comparison of 2 numbers; one form is a fraction
inverse property
expression
ratio
whole number

29. To make a percent
exponents
inverse property
greatest common factor
Multiply by 100%

30. The greatest whole number that is a factor of two or more nonzero whole numbers
prime factorization
odd
greatest common factor
difference

31. The answer to an addition problem
inverse property
greatest
sum
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

32. In 4x4=16 - what is 4?
equation
Probability for each event then multiply individual probabilities together
equivalent
root numbers

33. Adding/subtracting decimals
Line up decimal points
compute
greatest
greatest common factor

34. Answer to a multiplication problem
quotient
divisible
Number w/o signs
product

35. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
greatest
improper fraction
(Amount of increase/original whole) x100%

36. Median
Number w/o signs
Middle value
greatest
sum

37. To perform a calculation - E.g. 2+2=4
compute
Last two digits divisible by 4
Total A/total B
distributive property

38. The answer to a multiplication problem
common denominator
equivalent
product
order of operations

39. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Sum of digits divisible by 3
irrational numbers
divisibility by 3 rule
common denominator

40. Properties of numbers btw -1 and 1

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41. Standard deviation: greater if...
Greater spread in values
Last digit divisible by 2
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
difference

42. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
expression
place value
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
expanded form using exponents

43. When a number is larger than the other number. Example 65 > 56
percent
proportion
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
greater than

44. 8x8=64 What is 64?
number line
greatest
perfect square
distributive property

45. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
simplify
Multiply by 100%
divisibility by 3 rule
whole number

46. A shortcut for writing repeated multiplication
greater than
Reduce diagonally/vertically then multiply numerators and denominators
exponents
Sum of values/number of values

47. Simplifying complex fractions: two methods
numerator
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
odd number
value

48. New whole
Original whole +/- amount of change
not equal
value
Middle value

49. Reducing fractions
greatest common factor
Divide out largest common factor
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Divide by 100%

50. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
compatible numbers
fraction
inverse property
odd