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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. Adding/subtracting decimals
commutative property
Sum of digits divisible by 9
1 dividing by number
Line up decimal points

2. Be identical or equivalent to
Invert second term - then multiply
denominator
equal
value

3. The smallest number in a group of numbers
least common multiple
greatest common factor
even
least

4. Average value
variables
not equal
factor
Sum of values/number of values

5. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
value
repeating decimals
common denominator
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

6. Multiplying fractions
Number of decimal places is total number of decimals places in factors multiplied
Divide by 100%
Reduce diagonally/vertically then multiply numerators and denominators
exponents

7. When a number is larger than the other number. Example 65 > 56
Total A/total B
greater than
Middle value
variables

8. Number divisible by 9
Part
divisible
prime number
Sum of digits divisible by 9

9. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
Divisible by 2 and 3
product
least common multiple
inverse property

10. A fraction out of 100 - %
order of operations
evaluate
1 dividing by number
percent

11. To drop a percent
prime factorization
exponents
Divide by 100%
product

12. odd + even
Sum of digits divisible by 9
Number of desired outcomes/number of total possible outcomes
odd
constants

13. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Sum of digits divisible by 3
LCM is LCD
expression
estimate

14. In 4x4=16 - what is 4?
value
root numbers
even
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

15. Median
compatible numbers
number line
Multiply by 100%
Middle value

16. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Divisible by 2 and 3
Number of decimal places is total number of decimals places in factors multiplied
Greater spread in values
terminating decimals

17. To change a percent to a decimal
(Amount of decrease/original whole) x100%
divisibility by 3 rule
Drop percent - move decimal point two place to left
odd number

18. A value that does not change; any number
least
constants
prime number
associative property

19. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Reduce diagonally/vertically then multiply numerators and denominators
fraction
least
divisibility by 3 rule

20. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
decimal
odd number
prime number
Number w/o signs

21. How much a number is worth
greater than
Drop percent - move decimal point two place to left
terminating decimals
value

22. Absolute value of number
Number w/o signs
(Amount of increase/original whole) x100%
distributive property
irrational numbers

23. 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
equation
less than
mixed number

24. 8x8=64 What is 64?
improper fraction
Divide by 100%
1 dividing by number
perfect square

25. 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
Number w/o signs
even
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

26. Mode
Value occurring most frequently
Number of decimal places is total number of decimals places in factors multiplied
not equal
estimate

27. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
associative property
prime number
fraction
digit

28. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
even number
Divisible by 2 and 3
expanded form using exponents
fraction

29. Multiple-event probability
mixed number
proportion
sum
Probability for each event then multiply individual probabilities together

30. Multiplying decimals
equal
decimal
Original whole +/- amount of change
Number of decimal places is total number of decimals places in factors multiplied

31. Not identical or equivalent to
equivalent
not equal
range
associative property

32. To place a fraction in lowest terms
exponents
terminating decimals
identity property
simplify

33. Number divisible by 3
associative property
not equal
Sum of digits divisible by 3
denominator

34. Answer to a division problem
quotient
Part
estimate
greatest common factor

35. A set of operators - numbers - variables and grouping symbols; no equal sign
Multiply by 100%
Number of desired outcomes/number of total possible outcomes
expression
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

36. Dividing fractions
place value
Sum of values/number of values
Invert second term - then multiply
Line up decimal points

37. Percent decrease
odd number
odd
(Amount of decrease/original whole) x100%
estimate

38. Percent increase
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
range
(Amount of increase/original whole) x100%
Last digit 0 or 5

39. Two factors together that are multiplied to equal a larger number.
factor pair
Original whole +/- amount of change
evaluate
Middle value

40. Properties of numbers btw -1 and 1

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

42. A fraction whose numerator is greater than its denominator
Number of desired outcomes/number of total possible outcomes
compatible numbers
1 dividing by number
improper fraction

43. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
quotient
constants
fraction
Greater spread in values

44. To find the answer for; solve
least
divisibility by 3 rule
number line
evaluate

45. 1/5 + 1/4=4/20 +5/20 and 20 is the...
inverse property
Multiply by 100%
composite number
common denominator

46. An equation showing 2 ratios are equal
Number of desired outcomes/number of total possible outcomes
mixed number
proportion
odd

47. Percent x whole
Sum of digits divisible by 9
Part
Divide by 100%
divisible

48. Simplifying complex fractions: two methods
composite number
divisibility by 3 rule
Last digit divisible by 2
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

49. 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
digit
square number
Last two digits divisible by 4

50. Number divisible by 2
greater than
simplify
Last digit divisible by 2
prime number