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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 in a group of numbers
least
ratio
Value occurring most frequently
even number

2. To place a fraction in lowest terms
digit
Last digit 0 or 5
common denominator
simplify

3. New whole
Middle value
sum
Original whole +/- amount of change
composite number

4. Multiplying fractions
associative property
distributive property
Reduce diagonally/vertically then multiply numerators and denominators
expanded form using exponents

5. A comparison of 2 numbers; one form is a fraction
Last digit divisible by 2
odd
compensation
ratio

6. The expression of a number as a product of prime factors; use a factor tree!
even number
quotient
distributive property
prime factorization

7. When a number is larger than the other number. Example 65 > 56
root numbers
inverse property
greater than
associative property

8. 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.
compensation
least
square number
(Amount of increase/original whole) x100%

9. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
root numbers
greatest common factor
odd number
Total A/total B

10. A number made up of a whole number and a fraction
Number w/o signs
mixed number
Probability for each event then multiply individual probabilities together
fraction

11. To perform a calculation - E.g. 2+2=4
compute
Value occurring most frequently
Divisible by 2 and 3
associative property

12. A number with one or more digits to the right of the decimal point - E.g. .33
Last digit divisible by 2
Value occurring most frequently
decimal
expanded form using exponents

13. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
LCM is LCD
digit
Invert second term - then multiply
proportion

14. Percent x whole
sum
Number of desired outcomes/number of total possible outcomes
Part
variables

15. Number divisible by 2
numerator
Last two digits divisible by 4
estimate
Last digit divisible by 2

16. Answer to a multiplication problem
product
mixed number
Invert second term - then multiply
1 dividing by number

17. Absolute value of number
Last two digits divisible by 4
Number w/o signs
Number of desired outcomes/number of total possible outcomes
repeating decimals

18. The greatest whole number that is a factor of two or more nonzero whole numbers
Value occurring most frequently
factor
Middle value
greatest common factor

19. Properties of 0

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20. Simplifying complex fractions: two methods
Total A/total B
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
quotient

21. Number divisible by 4
less than
Value occurring most frequently
Last two digits divisible by 4
LCM is LCD

22. Average A per B
1 dividing by number
Total A/total B
Probability for each event then multiply individual probabilities together
LCM is LCD

23. Adding/subtracting fractions
least
factor
mixed number
LCM is LCD

24. Dividing decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Last digit 0 or 5
equation
least common multiple

25. 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)
commutative property
common denominator
compatible numbers
Reduce diagonally/vertically then multiply numerators and denominators

26. A number that results from multiplying a factor by itself
value
Invert second term - then multiply
prime factorization
square number

27. Two factors together that are multiplied to equal a larger number.
Number of desired outcomes/number of total possible outcomes
Number of decimal places is total number of decimals places in factors multiplied
Sum of digits divisible by 9
factor pair

28. 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
whole number
identity property
perfect square
number line

29. Properties of numbers btw -1 and 1

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30. A number with more than two factors
prime factorization
ratio
composite number
perfect square

31. 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)
square number
percent
associative property
perfect square

32. Mode
Number of desired outcomes/number of total possible outcomes
Value occurring most frequently
simplify
distributive property

33. The largest number in a group of numbers
composite number
Divide out largest common factor
greatest
Middle value

34. How much a number is worth
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
value
number line
odd number

35. A value that does not change; any number
compute
whole number
constants
evaluate

36. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
irrational numbers
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
digit
least common multiple

37. Adding/subtracting decimals
difference
Line up decimal points
even number
Divide by 100%

38. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
difference
odd number
expanded form using exponents
percent

39. odd + even
identity property
odd
Greater spread in values
divisible

40. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
exponents
decimal
prime factorization

41. Properties of 1 and -1

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42. A fraction whose numerator is greater than its denominator
value
identity property
improper fraction
(Amount of decrease/original whole) x100%

43. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
greater than
LCM is LCD
compatible numbers

44. Comparing decimal fractions
composite number
Add zeros to decimals until all decimals have same number of digits
fraction
Middle value

45. 1/5 + 1/4=4/20 +5/20 and 20 is the...
estimate
Sum of digits divisible by 3
common denominator
greatest common factor

46. 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
Number of desired outcomes/number of total possible outcomes
Drop percent - move decimal point two place to left
Part

47. 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
odd number
Sum of digits divisible by 3
irrational numbers

48. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
decimal
Divide out largest common factor
even number
difference

49. Dividing fractions
simplify
Invert second term - then multiply
Number w/o signs
(Amount of increase/original whole) x100%

50. The answer to a multiplication problem
composite number
Part
product
exponents