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Number Sense Vocab

Instructions:

Answer 50 questions in 15 minutes.
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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. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
variables
prime number
compute

2. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
odd number
expanded form using exponents
least common multiple
mixed number

3. Absolute value of number
quotient
commutative property
Middle value
Number w/o signs

4. A number that is multiplied by another number to find a producr
factor
rational numbers
difference
mixed number

5. To make a percent
common denominator
Multiply by 100%
Middle value
mixed number

6. The greatest whole number that is a factor of two or more nonzero whole numbers
greater than
Last digit 0 or 5
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
greatest common factor

7. Number divisible by 3
Invert second term - then multiply
Greater spread in values
Sum of digits divisible by 3
odd number

8. A value that does not change; any number
product
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
greatest common factor
constants

9. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
Number w/o signs
Last digit 0 or 5
equivalent
inverse property

10. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
equation
decimal
product
place value

11. 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
Sum of digits divisible by 9
estimate
identity property
rational numbers

12. The smallest number in a group of numbers
value
place value
Invert second term - then multiply
least

13. Number divisible by 6
Divisible by 2 and 3
inverse property
Number of desired outcomes/number of total possible outcomes
perfect square

14. Multiple-event probability
repeating decimals
Probability for each event then multiply individual probabilities together
rational numbers
number line

15. Average A per B
Total A/total B
estimate
identity property
even number

16. Dividing decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
odd number
simplify
greatest

17. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
rational numbers
1 dividing by number
decimal
prime number

18. Comparing decimal fractions
Last digit 0 or 5
Sum of digits divisible by 3
Sum of digits divisible by 9
Add zeros to decimals until all decimals have same number of digits

19. Relationship in which a number is smaller than another
Number w/o signs
Line up decimal points
equal
less than

20. 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)
prime number
simplify
root numbers
associative property

21. 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.
irrational numbers
compensation
Sum of digits divisible by 9
difference

22. Percent increase
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
(Amount of increase/original whole) x100%
product
constants

23. Multiplying decimals
variables
Number of decimal places is total number of decimals places in factors multiplied
Greater spread in values
digit

24. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Number of decimal places is total number of decimals places in factors multiplied
Probability for each event then multiply individual probabilities together
Number of desired outcomes/number of total possible outcomes

25. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
terminating decimals
divisible
repeating decimals
product

26. Probability
sum
Sum of digits divisible by 9
Number of desired outcomes/number of total possible outcomes
associative property

27. The property which allows you to add a number's opposite to it and always get 0 - The relationship of addition to subtraction or multiplication to division
sum
odd
inverse property
Invert second term - then multiply

28. 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
greatest
greatest common factor
equation

29. The answer to a subtraction problem
difference
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
greater than
variables

30. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
divisibility by 3 rule
perfect square
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
not equal

31. Number divisible by 2
prime factorization
perfect square
Last digit divisible by 2
place value

32. The bottom number in a fraction; tells how many parts a whole is divided into OR how many parts in a group - E.g. 2/4 and what position is the 4?
compatible numbers
denominator
square number
numerator

33. The difference between the greatest and the least numbers in a set of data.
range
place value
(Amount of increase/original whole) x100%
Number w/o signs

34. To find a number that is close to an exact answer - E.g. 23+24 is around 50
expanded form using exponents
estimate
(Amount of increase/original whole) x100%
odd

35. Properties of 1 and -1
product
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
equation
Probability for each event then multiply individual probabilities together

36. Adding/subtracting decimals
Line up decimal points
factor pair
improper fraction
LCM is LCD

37. Number divisible by 4
Last two digits divisible by 4
Multiply by 100%
Greater spread in values
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

38. In 4x4=16 - what is 4?
Multiply by 100%
odd number
root numbers
Greater spread in values

39. Dividing fractions
rational numbers
estimate
Invert second term - then multiply
Reduce diagonally/vertically then multiply numerators and denominators

40. Properties of numbers btw -1 and 1
Original whole +/- amount of change
terminating decimals
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
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

41. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Last digit 0 or 5
number line
equivalent
Last two digits divisible by 4

42. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
odd number
Add zeros to decimals until all decimals have same number of digits
whole number
number line

43. A number made up of a whole number and a fraction
product
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
mixed number
least

44. Natural Numbers - Whole Numbers - Integers - Rational Numbers
odd
rational numbers
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
inverse property

45. The answer to a multiplication problem
simplify
Greater spread in values
product
whole number

46. To perform a calculation - E.g. 2+2=4
improper fraction
compute
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Probability for each event then multiply individual probabilities together

47. To change a percent to a decimal
Drop percent - move decimal point two place to left
equivalent
Divide out largest common factor
Invert second term - then multiply

48. A comparison of 2 numbers; one form is a fraction
Divisible by 2 and 3
ratio
mixed number
denominator

49. Percent decrease
denominator
(Amount of decrease/original whole) x100%
compatible numbers
Last two digits divisible by 4

50. Answer to a division problem
expression
Sum of digits divisible by 3
quotient
Divide out largest common factor

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Number Sense Vocab

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