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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. Multiplying fractions
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 9
equation
Reduce diagonally/vertically then multiply numerators and denominators

2. A shortcut for writing repeated multiplication
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
exponents
factor
Divide by 100%

3. Percent increase
(Amount of increase/original whole) x100%
difference
prime number
compensation

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

5. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
prime number
terminating decimals
irrational numbers

6. A number with one or more digits to the right of the decimal point - E.g. .33
constants
decimal
terminating decimals
perfect square

7. Able to be divided evenly (without a remainder)
estimate
divisible
compatible numbers
(Amount of increase/original whole) x100%

8. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
product
odd number
least common multiple
variables

9. Relationship in which a number is smaller than another
distributive property
least common multiple
less than
odd

10. A number with more than two factors
Drop percent - move decimal point two place to left
place value
fraction
composite number

11. A set of operators - numbers - variables and grouping symbols; no equal sign
number line
value
expression
odd number

12. Reducing fractions
equivalent
LCM is LCD
product
Divide out largest common factor

13. Reciprocal of number
equivalent
Multiply by 100%
divisibility by 3 rule
1 dividing by number

14. 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?
Greater spread in values
least common multiple
compatible numbers
denominator

15. Multiplying decimals
Divide out largest common factor
less than
Number of decimal places is total number of decimals places in factors multiplied
rational numbers

16. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
prime factorization
order of operations
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
ratio

17. odd + even
decimal
odd
not equal
Probability for each event then multiply individual probabilities together

18. 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
expression
identity property
square number
less than

19. Dividing fractions
estimate
constants
composite number
Invert second term - then multiply

20. 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
greatest
difference
inverse property
Sum of digits divisible by 3

21. Answer to a division problem
quotient
inverse property
composite number
even

22. 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.
1 dividing by number
compensation
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Divide out largest common factor

23. Adding/subtracting decimals
Line up decimal points
order of operations
equivalent
Total A/total B

24. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Divide out largest common factor
digit
number line
(Amount of decrease/original whole) x100%

25. Average A per B
commutative property
estimate
Line up decimal points
Total A/total B

26. To find the answer for; solve
evaluate
divisibility by 3 rule
Probability for each event then multiply individual probabilities together
Last two digits divisible by 4

27. Adding/subtracting fractions
LCM is LCD
simplify
evaluate
percent

28. odd + odd
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
even
Sum of digits divisible by 9
expression

29. Median
identity property
Middle value
Last two digits divisible by 4
simplify

30. A letter that represents a value that may change
Last digit 0 or 5
variables
divisibility by 3 rule
compensation

31. Comparing positive fractions
Sum of digits divisible by 9
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
constants
fraction

32. 8x8=64 What is 64?
perfect square
Number w/o signs
Divisible by 2 and 3
Invert second term - then multiply

33. Properties of numbers btw -1 and 1

34. The largest number in a group of numbers
greatest
odd
prime factorization
Last two digits divisible by 4

35. The answer to an addition problem
numerator
sum
percent
Sum of digits divisible by 3

36. The expression of a number as a product of prime factors; use a factor tree!
sum
greater than
Value occurring most frequently
prime factorization

37. The difference between the greatest and the least numbers in a set of data.
range
Part
value
Last digit divisible by 2

38. New whole
value
divisibility by 3 rule
Original whole +/- amount of change
prime number

39. Properties of 1 and -1

40. Percent x whole
Part
Sum of digits divisible by 3
equal
odd number

41. A number that is multiplied by another number to find a producr
Line up decimal points
Sum of values/number of values
factor
commutative property

42. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Total A/total B
Last digit divisible by 2
divisibility by 3 rule
exponents

43. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
ratio
repeating decimals
common denominator
(Amount of increase/original whole) x100%

44. To place a fraction in lowest terms
LCM is LCD
simplify
root numbers
rational numbers

45. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
equivalent
least common multiple
proportion
terminating decimals

46. Number divisible by 2
Last digit divisible by 2
Sum of values/number of values
factor
associative property

47. 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)
associative property
percent
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

48. 1/5 + 1/4=4/20 +5/20 and 20 is the...
value
evaluate
decimal
common denominator

49. Number divisible by 4
Last two digits divisible by 4
prime number
common denominator
(Amount of increase/original whole) x100%

50. Number divisible by 5
Last digit 0 or 5
place value
even number
Line up decimal points