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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. Be identical or equivalent to
product
equal
even number
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

2. Reciprocal of number
Greater spread in values
identity property
1 dividing by number
place value

3. Two factors together that are multiplied to equal a larger number.
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
factor pair
commutative property
Greater spread in values

4. To change a percent to a decimal
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
LCM is LCD
(Amount of decrease/original whole) x100%
Drop percent - move decimal point two place to left

5. The expression of a number as a product of prime factors; use a factor tree!
evaluate
Drop percent - move decimal point two place to left
prime factorization
identity property

6. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Last digit 0 or 5
whole number
place value
digit

7. Properties of 1 and -1

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8. The greatest whole number that is a factor of two or more nonzero whole numbers
(Amount of increase/original whole) x100%
greatest common factor
even number
Part

9. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
terminating decimals
percent
compensation
fraction

10. Number divisible by 3
expression
Sum of digits divisible by 3
Part
odd number

11. Properties of 0

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12. A letter that represents a value that may change
Value occurring most frequently
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
variables
odd number

13. 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)=
commutative property
Divide by 100%
distributive property
Last digit 0 or 5

14. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
sum
odd number
compatible numbers
(Amount of decrease/original whole) x100%

15. New whole
greatest
Original whole +/- amount of change
Number of decimal places is total number of decimals places in factors multiplied
compensation

16. 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 two digits divisible by 4
identity property
decimal
simplify

17. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
distributive property
expanded form using exponents
greatest common factor
Reduce diagonally/vertically then multiply numerators and denominators

18. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
difference
equation
whole number
perfect square

19. To find the answer for; solve
compensation
ratio
equal
evaluate

20. Median
Middle value
Sum of values/number of values
denominator
value

21. Number divisible by 2
distributive property
Last digit divisible by 2
Reduce diagonally/vertically then multiply numerators and denominators
evaluate

22. An equation showing 2 ratios are equal
evaluate
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
proportion
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

23. 1/5 + 1/4=4/20 +5/20 and 20 is the...
estimate
common denominator
factor pair
Original whole +/- amount of change

24. Mode
greatest common factor
Value occurring most frequently
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
decimal

25. Multiplying fractions
Reduce diagonally/vertically then multiply numerators and denominators
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
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
compatible numbers

26. Percent x whole
square number
Part
1 dividing by number
Last digit 0 or 5

27. A shortcut for writing repeated multiplication
even
exponents
less than
greatest

28. Comparing positive fractions
square number
compensation
commutative property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

29. Percent decrease
product
Drop percent - move decimal point two place to left
denominator
(Amount of decrease/original whole) x100%

30. 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
equation
evaluate
equal
irrational numbers

31. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
fraction
prime factorization
Part
odd

32. 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?
Last digit 0 or 5
Total A/total B
numerator
equation

33. 8x8=64 What is 64?
perfect square
numerator
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
terminating decimals

34. Reducing fractions
least common multiple
Divide out largest common factor
common denominator
Drop percent - move decimal point two place to left

35. Not identical or equivalent to
compensation
not equal
least
odd number

36. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
equation
factor pair
digit
least

37. 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
expanded form using exponents
compute
repeating decimals

38. In 4x4=16 - what is 4?
odd
sum
product
root numbers

39. Adding/subtracting decimals
1 dividing by number
equation
mixed number
Line up decimal points

40. 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.
prime number
compensation
divisible
Last digit divisible by 2

41. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
prime number
even number
expanded form using exponents
ratio

42. Two expressions that are set equal to each other; a number sentence with an equal sign
Sum of values/number of values
least
equation
value

43. Comparing decimal fractions
Drop percent - move decimal point two place to left
prime number
compensation
Add zeros to decimals until all decimals have same number of digits

44. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
Total A/total B
estimate
Number w/o signs

45. Average A per B
terminating decimals
Total A/total B
LCM is LCD
improper fraction

46. Absolute value of number
quotient
Number of desired outcomes/number of total possible outcomes
Number w/o signs
factor

47. Average value
least
Sum of values/number of values
identity property
decimal

48. The answer to an addition problem
expression
evaluate
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
sum

49. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Sum of digits divisible by 9
rational numbers
Last two digits divisible by 4
repeating decimals

50. A number made up of a whole number and a fraction
factor
mixed number
divisible
Divisible by 2 and 3