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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. Able to be divided evenly (without a remainder)
terminating decimals
divisible
rational numbers
Reduce diagonally/vertically then multiply numerators and denominators

2. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
equal
Line up decimal points
ratio
compatible numbers

3. Be identical or equivalent to
whole number
Drop percent - move decimal point two place to left
equal
greater than

4. Two factors together that are multiplied to equal a larger number.
factor pair
compute
Last digit divisible by 2
Invert second term - then multiply

5. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
compensation
inverse property
range
divisibility by 3 rule

6. To drop a percent
Add zeros to decimals until all decimals have same number of digits
Divide by 100%
Divisible by 2 and 3
estimate

7. Multiplying decimals
digit
Number of decimal places is total number of decimals places in factors multiplied
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
compatible numbers

8. Multiplying fractions
prime number
equation
percent
Reduce diagonally/vertically then multiply numerators and denominators

9. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
rational numbers
place value
repeating decimals
Number w/o signs

10. In 4x4=16 - what is 4?
distributive property
factor pair
repeating decimals
root numbers

11. 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)
irrational numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Invert second term - then multiply
associative property

12. 8x8=64 What is 64?
perfect square
Probability for each event then multiply individual probabilities together
Divide out largest common factor
variables

13. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Number of decimal places is total number of decimals places in factors multiplied
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
fraction
Value occurring most frequently

14. The answer to an addition problem
proportion
Drop percent - move decimal point two place to left
sum
Sum of digits divisible by 9

15. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Divide out largest common factor
identity property
denominator
common denominator

16. To perform a calculation - E.g. 2+2=4
compute
odd number
Reduce diagonally/vertically then multiply numerators and denominators
greater than

17. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Sum of digits divisible by 3
expanded form using exponents
number line
compensation

18. Standard deviation: greater if...
denominator
square number
prime factorization
Greater spread in values

19. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
(Amount of decrease/original whole) x100%
prime factorization
product

20. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
Probability for each event then multiply individual probabilities together
Sum of values/number of values
square number

21. Dividing fractions
exponents
Invert second term - then multiply
associative property
compensation

22. A number with one or more digits to the right of the decimal point - E.g. .33
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
perfect square
Divide by 100%
decimal

23. Multiple-event probability
Probability for each event then multiply individual probabilities together
mixed number
Reduce diagonally/vertically then multiply numerators and denominators
even

24. To find a number that is close to an exact answer - E.g. 23+24 is around 50
greater than
constants
estimate
Multiply by 100%

25. Number divisible by 9
Sum of digits divisible by 9
compensation
(Amount of decrease/original whole) x100%
place value

26. An equation showing 2 ratios are equal
Drop percent - move decimal point two place to left
Multiply by 100%
Add zeros to decimals until all decimals have same number of digits
proportion

27. How much a number is worth
value
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
product
exponents

28. The largest number in a group of numbers
Last digit divisible by 2
factor
greatest
odd

29. To make a percent
(Amount of decrease/original whole) x100%
equivalent
identity property
Multiply by 100%

30. Adding/subtracting decimals
LCM is LCD
irrational numbers
Line up decimal points
compensation

31. The smallest number in a group of numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
least
Line up decimal points
divisibility by 3 rule

32. 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.
even number
compensation
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
numerator

33. odd + even
numerator
odd
Divide by 100%
Number of desired outcomes/number of total possible outcomes

34. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
Add zeros to decimals until all decimals have same number of digits
ratio
repeating decimals

35. A comparison of 2 numbers; one form is a fraction
Probability for each event then multiply individual probabilities together
ratio
Line up decimal points
estimate

36. The difference between the greatest and the least numbers in a set of data.
evaluate
Total A/total B
range
constants

37. Comparing positive fractions
digit
Total A/total B
Last digit divisible by 2
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

38. To place a fraction in lowest terms
Last two digits divisible by 4
simplify
prime number
sum

39. Adding/subtracting fractions
LCM is LCD
not equal
Total A/total B
1 dividing by number

40. New whole
composite number
Original whole +/- amount of change
Sum of values/number of values
equivalent

41. To change a percent to a decimal
Drop percent - move decimal point two place to left
odd number
improper fraction
difference

42. 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)=
not equal
Total A/total B
factor pair
distributive property

43. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
prime factorization
prime 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
Sum of digits divisible by 3

44. A number with more than two factors
Last digit 0 or 5
commutative property
composite number
1 dividing by number

45. Dividing decimals
greatest common factor
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Number of desired outcomes/number of total possible outcomes
LCM is LCD

46. When a number is larger than the other number. Example 65 > 56
Number of desired outcomes/number of total possible outcomes
Add zeros to decimals until all decimals have same number of digits
greater than
evaluate

47. The answer to a multiplication problem
simplify
Number of desired outcomes/number of total possible outcomes
product
rational numbers

48. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
even number
Probability for each event then multiply individual probabilities together
simplify

49. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
Last two digits divisible by 4
compensation
range

50. The answer to a subtraction problem
product
difference
ratio
Middle value