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
Total A/total B
Add zeros to decimals until all decimals have same number of digits
even
Reduce diagonally/vertically then multiply numerators and denominators


2. A number with one or more digits to the right of the decimal point - E.g. .33
percent
Drop percent - move decimal point two place to left
decimal
equal


3. In 4x4=16 - what is 4?
distributive property
root numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
even


4. The greatest whole number that is a factor of two or more nonzero whole numbers
irrational numbers
factor
greatest common factor
greatest


5. Comparing decimal fractions
Number w/o signs
Add zeros to decimals until all decimals have same number of digits
Invert second term - then multiply
Middle value


6. Number divisible by 2
Total A/total B
Last digit divisible by 2
prime factorization
Probability for each event then multiply individual probabilities together


7. 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
Part
Add zeros to decimals until all decimals have same number of digits
identity property
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately


8. A number that results from multiplying a factor by itself
sum
value
square number
common denominator


9. 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.
estimate
compensation
number line
root numbers


10. A number with more than two factors
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
composite number
square number


11. Properties of 1 and -1


12. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
divisible
decimal
number line
even number


13. Number divisible by 6
Probability for each event then multiply individual probabilities together
exponents
Divisible by 2 and 3
ratio


14. To find a number that is close to an exact answer - E.g. 23+24 is around 50
Reduce diagonally/vertically then multiply numerators and denominators
Divide out largest common factor
odd number
estimate


15. Not identical or equivalent to
even number
equation
not equal
expression


16. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Line up decimal points
greatest common factor
even


17. A value that does not change; any number
Sum of digits divisible by 3
constants
Last digit divisible by 2
Original whole +/- amount of change


18. A number made up of a whole number and a fraction
mixed number
Value occurring most frequently
compatible numbers
Last two digits divisible by 4


19. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
(Amount of increase/original whole) x100%
divisibility by 3 rule
number line
prime factorization


20. odd + odd
even
difference
Sum of digits divisible by 3
Greater spread in values


21. Comparing positive fractions
percent
even number
expanded form using exponents
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value


22. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Middle value
Reduce diagonally/vertically then multiply numerators and denominators
Part
odd number


23. 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
odd number
Add zeros to decimals until all decimals have same number of digits
quotient
inverse property


24. Reciprocal of number
Add zeros to decimals until all decimals have same number of digits
terminating decimals
decimal
1 dividing by number


25. To change a percent to a decimal
proportion
product
numerator
Drop percent - move decimal point two place to left


26. 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)=
identity property
distributive property
odd number
quotient


27. The smallest number in a group of numbers
equivalent
Number of desired outcomes/number of total possible outcomes
odd number
least


28. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
prime number
LCM is LCD
order of operations
least common multiple


29. Standard deviation: greater if...
least
denominator
Greater spread in values
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value


30. A shortcut for writing repeated multiplication
exponents
simplify
square number
least common multiple


31. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Total A/total B
common denominator
root numbers
Divide by 100%


32. Median
numerator
identity property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Middle value


33. 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
constants
Last digit divisible by 2
Sum of digits divisible by 9


34. Percent increase
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
(Amount of increase/original whole) x100%
Invert second term - then multiply
associative property


35. 8x8=64 What is 64?
Sum of digits divisible by 3
variables
perfect square
sum


36. To drop a percent
decimal
Divide by 100%
1 dividing by number
composite number


37. A fraction whose numerator is greater than its denominator
improper fraction
simplify
rational numbers
divisibility by 3 rule


38. Average A per B
Greater spread in values
Total A/total B
constants
difference


39. 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?
place value
odd
range
denominator


40. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
compensation
Number w/o signs
compatible numbers


41. Multiplying decimals
product
Number of decimal places is total number of decimals places in factors multiplied
repeating decimals
(Amount of decrease/original whole) x100%


42. Adding/subtracting fractions
Add zeros to decimals until all decimals have same number of digits
number line
LCM is LCD
Invert second term - then multiply


43. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
least
ratio
place value
(Amount of increase/original whole) x100%


44. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
greatest
square number
terminating decimals
divisibility by 3 rule


45. To make a percent
order of operations
associative property
Multiply by 100%
greatest


46. Number divisible by 9
proportion
Sum of digits divisible by 9
Sum of values/number of values
Add zeros to decimals until all decimals have same number of digits


47. A comparison of 2 numbers; one form is a fraction
evaluate
ratio
not equal
Last digit 0 or 5


48. 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)
Divide by 100%
commutative property
associative property
quotient


49. odd + even
odd
simplify
range
quotient


50. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Line up decimal points
improper fraction
even number
prime number