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Test your basic knowledge 
Number Sense Vocab
Start Test
Study First
Subjects
:
math
,
numbersense
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 reenforces your understanding as you take the test each time.
1. Reducing fractions
commutative property
divisibility by 3 rule
Divide out largest common factor
Number w/o signs
2. How much a number is worth
odd
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
value
LCM is LCD
3. To place a fraction in lowest terms
simplify
compensation
perfect square
least
4. Two expressions that are set equal to each other; a number sentence with an equal sign
estimate
Multiply by 100%
digit
equation
5. A shortcut for writing repeated multiplication
exponents
square number
Number of desired outcomes/number of total possible outcomes
composite number
6. 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 values/number of values
compensation
identity property
Drop percent  move decimal point two place to left
7. Reciprocal of number
1 dividing by number
odd number
Part
quotient
8. The answer to a multiplication problem
perfect square
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
identity property
9. A number made up of a whole number and a fraction
odd number
mixed number
decimal
ratio
10. Number divisible by 2
equal
divisibility by 3 rule
Last digit divisible by 2
order of operations
11. Answer to a multiplication problem
commutative property
square number
product
Add zeros to decimals until all decimals have same number of digits
12. Cannot be expressed in the form a/b. Include square roots of whole numbers that are not perfect squares and non terminating decimals that do not repeat. pi
percent
Middle value
irrational numbers
composite number
13. Not identical or equivalent to
perfect square
not equal
least
difference
14. A number without fractions; an integer E.g. 0  1  2  3  4  5  6  7  8  9...
whole number
Invert second term  then multiply
equal
even number
15. Number divisible by 3
expression
Sum of digits divisible by 3
fraction
order of operations
16. A value that does not change; any number
Line up decimal points
simplify
constants
Probability for each event then multiply individual probabilities together
17. A number with more than two factors
composite number
whole number
expression
Original whole +/ amount of change
18. New whole
distributive property
variables
digit
Original whole +/ amount of change
19. The expression of a number as a product of prime factors; use a factor tree!
less than
common denominator
prime factorization
factor
20. 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.
place value
even
compensation
product
21. Average A per B
Reduce diagonally/vertically then multiply numerators and denominators
compatible numbers
Divide out largest common factor
Total A/total B
22. A fraction out of 100  %
factor pair
Invert second term  then multiply
percent
greatest common factor
23. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
equal
denominator
Sum of digits divisible by 9
24. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
Line up decimal points
mixed number
least common multiple
digit
25. To drop a percent
Divide by 100%
improper fraction
compatible numbers
Multiply by 100%
26. A fraction whose numerator is greater than its denominator
identity property
ratio
improper fraction
sum
27. Number divisible by 5
ratio
Last digit 0 or 5
number line
Invert second term  then multiply
28. In multiplication or addition  the order of two numbers may be switched around and the answer is the same. Ex: a+b = b+a. or (1x2) x 3=1x (2x3)
Divide by 100%
commutative property
Add zeros to decimals until all decimals have same number of digits
distributive property
29. Mode
simplify
Value occurring most frequently
percent
compatible numbers
30. A line for representing and graphing numbers. Each point on the line corresponds to a number.
improper fraction
ratio
Divide by 100%
number line
31. odd + odd
even
Sum of digits divisible by 3
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
inverse property
32. Any whole number that ends with 0  2  4  6  or 8  any whole number that can be divided by 2
(Amount of decrease/original whole) x100%
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
even number
33. Number divisible by 4
repeating decimals
compatible numbers
Last two digits divisible by 4
equation
34. Number divisible by 6
Divide out largest common factor
Divisible by 2 and 3
greatest
common denominator
35. 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?
Reduce diagonally/vertically then multiply numerators and denominators
greater than
denominator
prime number
36. Dividing fractions
digit
quotient
place value
Invert second term  then multiply
37. Comparing decimal fractions
terminating decimals
Add zeros to decimals until all decimals have same number of digits
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
proportion
38. Able to be divided evenly (without a remainder)
divisible
ratio
greater than
order of operations
39. Absolute value of number
identity property
greatest common factor
odd
Number w/o signs
40. Natural Numbers  Whole Numbers  Integers  Rational Numbers
rational numbers
equivalent
range
Multiply by 100%
41. A number written in expanded form with the place values written in exponential form  E.g. 2432=2000+400+30+2
commutative property
expanded form using exponents
evaluate
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
42. When a number is larger than the other number. Example 65 > 56
product
square number
simplify
greater than
43. 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
denominator
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
inverse property
distributive property
44. In 4x4=16  what is 4?
repeating decimals
product
place value
root numbers
45. A letter that represents a value that may change
Last digit divisible by 2
digit
composite number
variables
46. Numbers that are easy to compute mentally  E.g. 34 / 5 is close to 35 / 5
compatible numbers
repeating decimals
proportion
equation
47. 1/5 + 1/4=4/20 +5/20 and 20 is the...
equal
fraction
least common multiple
common denominator
48. A number that represents a part of a whole or a group; also means 'divided by'  E.g. 1/2 3/4.5/6
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
fraction
Divisible by 2 and 3
Part
49. Two numbers or expressions that mean the same thing  E.g. 2/3=4/6
greatest
variables
square number
equivalent
50. To make a percent
difference
Divide out largest common factor
Multiply by 100%
percent