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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. Dividing fractions
not equal
divisible
Invert second term - then multiply
Number w/o signs

2. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
square number
compensation
Last digit 0 or 5
repeating decimals

3. Properties of 1 and -1

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4. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
(Amount of increase/original whole) x100%
range
divisibility by 3 rule
proportion

5. Average A per B
identity property
Original whole +/- amount of change
Total A/total B
repeating decimals

6. A comparison of 2 numbers; one form is a fraction
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
commutative property
ratio
divisible

7. Two factors together that are multiplied to equal a larger number.
divisibility by 3 rule
factor pair
Probability for each event then multiply individual probabilities together
root numbers

8. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
Last digit 0 or 5
whole number
ratio
square number

9. A line for representing and graphing numbers. Each point on the line corresponds to a number.
common denominator
number line
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Invert second term - then multiply

10. 8x8=64 What is 64?
Greater spread in values
compensation
expanded form using exponents
perfect square

11. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
perfect square
factor pair
quotient

12. Comparing positive fractions
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
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
prime factorization

13. The largest number in a group of numbers
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
number line
simplify
greatest

14. Dividing decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Number of decimal places is total number of decimals places in factors multiplied
1 dividing by number
value

15. An equation showing 2 ratios are equal
square number
proportion
range
Number of decimal places is total number of decimals places in factors multiplied

16. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
Middle value
whole number
even number
Number w/o signs

17. 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.
Divide by 100%
compensation
denominator
odd number

18. The greatest whole number that is a factor of two or more nonzero whole numbers
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
estimate
greatest common factor
even

19. To find the answer for; solve
Greater spread in values
evaluate
prime factorization
Divisible by 2 and 3

20. In 4x4=16 - what is 4?
Drop percent - move decimal point two place to left
Number of decimal places is total number of decimals places in factors multiplied
root numbers
compatible numbers

21. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
expression
Sum of values/number of values
odd number
1 dividing by number

22. A value that does not change; any number
Sum of digits divisible by 3
constants
least
order of operations

23. To perform a calculation - E.g. 2+2=4
value
compute
1 dividing by number
simplify

24. 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
decimal
numerator
not equal
identity property

25. To drop a percent
divisibility by 3 rule
Divide out largest common factor
Divide by 100%
whole number

26. Answer to a division problem
irrational numbers
quotient
least common multiple
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

27. To find a number that is close to an exact answer - E.g. 23+24 is around 50
percent
estimate
terminating decimals
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

28. Percent increase
denominator
perfect square
(Amount of increase/original whole) x100%
greater than

29. A number with more than two factors
compensation
commutative property
composite number
proportion

30. The answer to a multiplication problem
constants
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 of desired outcomes/number of total possible outcomes
product

31. Standard deviation: greater if...
(Amount of increase/original whole) x100%
factor pair
greatest common factor
Greater spread in values

32. Be identical or equivalent to
equal
associative property
estimate
least

33. 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
terminating decimals
Divisible by 2 and 3
Line up decimal points
irrational numbers

34. Multiple-event probability
Probability for each event then multiply individual probabilities together
improper fraction
root numbers
expression

35. A set of operators - numbers - variables and grouping symbols; no equal sign
inverse property
product
denominator
expression

36. The smallest number in a group of numbers
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
less than
least
root numbers

37. odd + even
Greater spread in values
Total A/total B
perfect square
odd

38. 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
proportion
improper fraction
Line up decimal points

39. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
evaluate
Sum of values/number of values

40. A letter that represents a value that may change
Divisible by 2 and 3
root numbers
variables
square number

41. Adding/subtracting fractions
prime number
ratio
associative property
LCM is LCD

42. Number divisible by 9
exponents
root numbers
Sum of digits divisible by 9
Invert second term - then multiply

43. Properties of 0

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44. 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)=
distributive property
Divisible by 2 and 3
place value
compensation

45. Multiplying fractions
Reduce diagonally/vertically then multiply numerators and denominators
divisible
product
irrational numbers

46. Number divisible by 3
root numbers
estimate
Sum of digits divisible by 3
improper fraction

47. Average value
Divide by 100%
Sum of values/number of values
Invert second term - then multiply
Add zeros to decimals until all decimals have same number of digits

48. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
least common multiple
inverse property
equation
place value

49. To change a percent to a decimal
place value
Drop percent - move decimal point two place to left
compute
percent

50. To place a fraction in lowest terms
percent
simplify
order of operations
(Amount of decrease/original whole) x100%