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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. 8x8=64 What is 64?
Divisible by 2 and 3
equal
Sum of digits divisible by 9
perfect square

2. An equation showing 2 ratios are equal
equal
decimal
proportion
root numbers

3. A set of operators - numbers - variables and grouping symbols; no equal sign
Reduce diagonally/vertically then multiply numerators and denominators
even
expression
Sum of values/number of values

4. Average value
commutative property
Sum of values/number of values
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Invert second term - then multiply

5. Relationship in which a number is smaller than another
less than
product
order of operations
Last digit 0 or 5

6. A number with one or more digits to the right of the decimal point - E.g. .33
Add zeros to decimals until all decimals have same number of digits
inverse property
product
decimal

7. To place a fraction in lowest terms
simplify
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
Sum of digits divisible by 9
range

8. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Number w/o signs
repeating decimals
Original whole +/- amount of change
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

9. Number divisible by 5
Last digit 0 or 5
inverse property
constants
Last digit divisible by 2

10. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
root numbers
whole number
exponents
even number

11. Two factors together that are multiplied to equal a larger number.
factor pair
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
Sum of digits divisible by 3
Greater spread in values

12. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
compute
number line
exponents
equivalent

13. Answer to a multiplication problem
product
odd
greatest common factor
estimate

14. The answer to a subtraction problem
product
compatible numbers
difference
odd

15. The greatest whole number that is a factor of two or more nonzero whole numbers
Sum of digits divisible by 3
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
variables
greatest common factor

16. 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)=
compensation
exponents
distributive property
decimal

17. Answer to a division problem
even number
quotient
identity property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

18. Percent increase
digit
(Amount of increase/original whole) x100%
decimal
equal

19. Number divisible by 4
greatest
numerator
Number w/o signs
Last two digits divisible by 4

20. A number with more than two factors
square number
composite number
odd
divisible

21. Natural Numbers - Whole Numbers - Integers - Rational Numbers
compatible numbers
equal
factor pair
rational numbers

22. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
ratio
compute
place value
equal

23. A value that does not change; any number
constants
estimate
less than
least

24. Not identical or equivalent to
not equal
Total A/total B
Last two digits divisible by 4
even number

25. Multiplying fractions
divisible
common denominator
Reduce diagonally/vertically then multiply numerators and denominators
number line

26. Reducing fractions
product
inverse property
perfect square
Divide out largest common factor

27. To change a percent to a decimal
compute
decimal
Drop percent - move decimal point two place to left
associative property

28. odd + even
identity property
Reduce diagonally/vertically then multiply numerators and denominators
Number of desired outcomes/number of total possible outcomes
odd

29. The expression of a number as a product of prime factors; use a factor tree!
odd
inverse property
proportion
prime factorization

30. A fraction out of 100 - %
percent
improper fraction
least
1 dividing by number

31. To find the answer for; solve
perfect square
number line
fraction
evaluate

32. A shortcut for writing repeated multiplication
odd
Drop percent - move decimal point two place to left
even
exponents

33. How much a number is worth
denominator
terminating decimals
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
value

34. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Reduce diagonally/vertically then multiply numerators and denominators
ratio
greatest

35. Probability
rational numbers
number line
terminating decimals
Number of desired outcomes/number of total possible outcomes

36. Median
denominator
Greater spread in values
Middle value
simplify

37. Be identical or equivalent to
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
numerator
difference
equal

38. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
order of operations
expanded form using exponents
product
equal

39. Adding/subtracting decimals
Line up decimal points
range
decimal
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

40. To perform a calculation - E.g. 2+2=4
Multiply by 100%
compute
root numbers
Number of decimal places is total number of decimals places in factors multiplied

41. A letter that represents a value that may change
root numbers
variables
Add zeros to decimals until all decimals have same number of digits
irrational numbers

42. Comparing decimal fractions
compatible numbers
number line
Add zeros to decimals until all decimals have same number of digits
Multiply by 100%

43. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Greater spread in values
variables
compatible numbers
product

44. The difference between the greatest and the least numbers in a set of data.
range
variables
odd
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

45. Percent x whole
compatible numbers
Part
sum
identity property

46. New whole
Original whole +/- amount of change
Number of decimal places is total number of decimals places in factors multiplied
Reduce diagonally/vertically then multiply numerators and denominators
less than

47. Average A per B
Line up decimal points
digit
Total A/total B
proportion

48. To make a percent
least
greater than
equal
Multiply by 100%

49. Multiple-event probability
Sum of digits divisible by 9
Probability for each event then multiply individual probabilities together
ratio
equivalent

50. A number made up of a whole number and a fraction
mixed number
Sum of digits divisible by 9
greatest
Total A/total B