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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. When a number is larger than the other number. Example 65 > 56
irrational numbers
greater than
greatest
exponents

2. Properties of 0

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3. Dividing decimals
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
denominator
prime number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

4. Comparing decimal fractions
ratio
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Add zeros to decimals until all decimals have same number of digits
Original whole +/- amount of change

5. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
inverse property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
prime number
Line up decimal points

6. Number divisible by 3
square number
even number
range
Sum of digits divisible by 3

7. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
improper fraction
compatible numbers
factor
numerator

8. A comparison of 2 numbers; one form is a fraction
ratio
value
improper fraction
factor pair

9. To place a fraction in lowest terms
simplify
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
Middle value
repeating decimals

10. Adding/subtracting fractions
LCM is LCD
Divide out largest common factor
equal
Number of decimal places is total number of decimals places in factors multiplied

11. The answer to a subtraction problem
Total A/total B
even
compatible numbers
difference

12. Number divisible by 6
Middle value
Total A/total B
Divisible by 2 and 3
odd

13. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
prime factorization
greatest
Reduce diagonally/vertically then multiply numerators and denominators

14. A number with one or more digits to the right of the decimal point - E.g. .33
expanded form using exponents
decimal
equal
product

15. Average A per B
denominator
square number
prime number
Total A/total B

16. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
greatest
place value
order of operations
Value occurring most frequently

17. 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.
denominator
compensation
Reduce diagonally/vertically then multiply numerators and denominators
Value occurring most frequently

18. To change a percent to a decimal
greatest
Drop percent - move decimal point two place to left
constants
even

19. Reciprocal of number
1 dividing by number
Invert second term - then multiply
order of operations
Part

20. The answer to a multiplication problem
product
Number of desired outcomes/number of total possible outcomes
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
even number

21. Properties of numbers btw -1 and 1

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22. To make a percent
Middle value
compensation
prime number
Multiply by 100%

23. 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
whole number
Line up decimal points
repeating decimals
irrational numbers

24. New whole
perfect square
Original whole +/- amount of change
prime number
compute

25. odd + odd
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
identity property
Add zeros to decimals until all decimals have same number of digits
even

26. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Last digit 0 or 5
product
odd number
ratio

27. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
greater than
(Amount of decrease/original whole) x100%
expanded form using exponents
perfect square

28. In 4x4=16 - what is 4?
digit
root numbers
even number
composite number

29. How much a number is worth
Original whole +/- amount of change
place value
perfect square
value

30. Dividing fractions
equivalent
decimal
evaluate
Invert second term - then multiply

31. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
factor pair
order of operations
least common multiple
denominator

32. 1/5 + 1/4=4/20 +5/20 and 20 is the...
LCM is LCD
common denominator
Number of desired outcomes/number of total possible outcomes
equivalent

33. 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?
denominator
compatible numbers
mixed number
Value occurring most frequently

34. A number with more than two factors
composite number
commutative property
identity property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

35. The expression of a number as a product of prime factors; use a factor tree!
prime factorization
least
product
mixed number

36. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Probability for each event then multiply individual probabilities together
digit
Last digit divisible by 2
Original whole +/- amount of change

37. To find the answer for; solve
Last digit 0 or 5
evaluate
divisibility by 3 rule
ratio

38. The greatest whole number that is a factor of two or more nonzero whole numbers
factor
numerator
greatest common factor
divisible

39. 8x8=64 What is 64?
perfect square
Divide by 100%
order of operations
Sum of digits divisible by 3

40. A number made up of a whole number and a fraction
Number of desired outcomes/number of total possible outcomes
Reduce diagonally/vertically then multiply numerators and denominators
mixed number
distributive property

41. Median
Middle value
expression
rational numbers
Number w/o signs

42. Percent x whole
compute
common denominator
Part
improper fraction

43. To perform a calculation - E.g. 2+2=4
least
terminating decimals
greatest common factor
compute

44. Absolute value of number
product
Number w/o signs
(Amount of decrease/original whole) x100%
root numbers

45. Number divisible by 5
identity property
ratio
Last digit 0 or 5
odd number

46. The largest number in a group of numbers
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
proportion
repeating decimals
greatest

47. 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
prime number
even number
least
identity property

48. 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
Middle value
even
Divisible by 2 and 3

49. Answer to a division problem
inverse property
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
quotient

50. 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)
repeating decimals
greatest
commutative property
percent