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Problem NameRow TypeTitleBody TextAnsweranswerTypeHintIDDependencymcChoices
Images (space delimited)
ParentOER srcopenstax KCKCTaxonomy
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real1problem
Identifying Rational Numbers
Write each of the following rational numbers as either a terminating or repeating decimal.
https://openstax.org/
Classifying a Real Number
Classifying a Real Number
openstax
3
real1stepWhat is 15/5?3numeric
4
real1hint
Fraction Explanation
15/5 implies having 15 pieces needed to be split amongst 5 people.
h1
5
real1scaffoldDividing
We can express the above idea as 15 divided by 5. What is that equal to?
3numerich2h1
6
real1stepWhat is 13/25?0.52numeric
7
real1hint
Fraction Explanation
13/25 implies having 13 pieces needed to be split amongst 25 people.
h1
8
real1scaffoldDividing
We can express the above idea as 13 divided by 25. What is that equal to?
0.52numerich2h1
9
real1step
What is -5/7? (To the nearest hundredth)
-0.71mc
-0.25|-0.71|0.57|-0.63
10
real1hintDividing
We can solve this problem by dividing -5 into 7 pieces.
h1
11
real2problem
Converting Fractions of a Unit into a Smaller Unit
http://tasks.illustrativemathematics.org/
Classifying a Real Number
5.MD.A.1, 5.NF.B.3
Common Core
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real2step
Five brothers are going to take turns watching their family's new puppy. How much time will each brother spend watching the puppy in a single day if they all watch him for an equal length of time?
Write your answer using only hours.
24/5algebra
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real2hintHours in a Day
The day has 24 hours.
h1
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real2hintNumber Line
The problem can be solved by drawing a number line of length 24 and separating it into 5 equal parts.
h2h1
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real2hintFraction
The separation of the number line can be represented as a fraction or a decimal.
h3h2
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real2step
Mrs. Hinojosa had 75 feet of ribbon. If each of the 18 students in her class gets an equal length of ribbon, how long will each piece be?
Write your answer using only feet.
25/6algebra
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real2hintNumber Line
The problem can be solved by drawing a number line of length 75 and separating it into 18 equal parts.
h1
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real2hintFraction
The separation of the number line can be represented as a fraction or a decimal.
h2h1
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real2hintSimplify
The process can be made easier by noticing both the length of the ribbon and the number of students are divisible by 6
h3h2
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real3problemSets of Numbers
https://openstax.org/
Classifying a Real Number
Classifying a Real Number
https://openstax.org/
21
real3step
Which of the following numbers does not belong in the set of natural number?
0mc0|1|2|3
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real3hintCounting
The natural numbers consist of the numbers used for counting.
h1
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real3hintCounting
Counting generally starts form the number 1.
h2h1
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real3step
Which of the following numbers belongs to the set of whole numbers?
0/4mc-2|0/4|4.5|3/7
25
real3hintWhole Numbers
The set of whole numbers is the set of natural numbers plus zero.
h1
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real3scaffoldZero Fractions
What does any fraction of the form 0/x simplify to? (where x is nonzero)
0algebrah2h1
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real3step
In which of the following sets can you find π?
Set of Irrational Numbers
mc
Set of Rational Numbers|Set of Integers|Set of Natural Numbers|Set of Irrational Numbers
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real3hint
Set of Rational Numbers
The set of rational numbers includes fractions written as m/n where m and n are itnegers, and n does not equal 0.
h1
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real3hint
Set of Irrational Numbers
The set of irrational numbers is the set of numbers that are not rational, are nonrepeating, and are nonterminating
h2h1
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real3hintProperties of π
π is not rational, nonrepeating, and nonterminating
h3h2
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real4problem
Properties of Real Numbers
https://www.oercommons.org/
Classifying a Real Number
Real NumbersOER Commons
32
real4step
The Closure Property
If a and b are both real numbers, then the sum a+b is always a
Real Numbermc
Natural Number|Whole Number|Real Number|Rational Number
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real4hintClosure Property
The closure proeprty states that if a and b are real numbers, then a+b is a unique real number, and a⋅b is a unique real number.
h1
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real4step
Commutative Property
If a and b are both real numbers and a*b = c, then what is b*a?
cnumeric
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real4hint
Commutative Property of Addition
The commutative proeprty of addition states that if a and b are real numbers, then a+b=b+a
h1
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real4hint
Commutative Property of Multiplication
The commutative proeprty of addition states that if a and b are real numbers, then a*b=b*a
h2h1
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real5problem
Using the Order of Operations
Use the order of operations to evaluate each of the following expressions.
https://openstax.org/
Performing Calculations Using the Order of Operations
Performing Calculations Using the Order of Operations
https://openstax.org/
38
real5step
What is (3*2)**2-4(6+2)?
4algebra
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real5hintParentheses
The first step is to simplify the parentheses.
h1
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real5scaffoldParenthesesWhat is 3*2?6algebrah2h1
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real5scaffoldParenthesesWhat is 6+2?8algebrah3h1
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real5hintExponent
The next step is to simplify any exponents.
h4h2,h3
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real5scaffoldExponentWhat is 6**2?36algebrah5h4
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real5hintMultiplication
The next step is to simplify multiplication and division.
h6h5
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real5scaffoldMultiplicationWhat is 4*8?32algebrah7h6
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real5hintSubtraction
The final step is to simplify addition and subtraction.
h8h7
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real5scaffoldSubtractionWhat is 36-32?4algebrah9h8
48
real5step
What is 7(5*3)-2((6-3)-4**2)+1
132algebra
49
real5hintParentheses
The first step is to simplify the parentheses.
h1
50
real5scaffoldParenthesesWhat is 5*3?15algebrah2h1
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real5scaffoldParenthesesWhat is 6-3?3algebrah3h1
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real5scaffoldParenthesesWhat is 4**2?16algebrah4h2,h3
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real5scaffoldParenthesesWhat is 3-16?-13algebrah5h4
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real5hintMultiplication
The next step is to simplify multiplication and division.
h6h5
55
real5scaffoldMultiplicationWhat is 7*15?105algebrah7h6
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real5scaffoldMultiplication
What is (-2)*(-13)?
26algebrah8h7
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real5hintAddition
The final step is to simplify addition and subtraction.
h9h8
58
real5scaffoldAddition
What is 105+26+1?
132algebrah10h9
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real6problem
Distributive Property
https://openstax.org/
Performing Calculations Using the Order of Operations
Performing Calculations Using the Order of Operations
https://openstax.org/
60
real6step
What is 4(12+(-7))?
20algebra
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real6hint
Distributive Property
The distributive property states that the product of a factor times a sum is the sum of the factor times each term in the sum. a⋅(b+c)=a⋅b+a⋅c
h1
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real6scaffoldMultiplicationWhat is 4*12?48algebrah2h1
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real6scaffoldMultiplicationWhat is 4*(-7)?-28algebrah3h1
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real6scaffoldAddition
What is 48+(-28)?
20algebrah4h2,h3
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real6step
What is  100(0.75+(-2.38))?
-163mc
-149|-163|-313|-326
66
real6hint
Distributive Property
The distributive property states that the product of a factor times a sum is the sum of the factor times each term in the sum. a⋅(b+c)=a⋅b+a⋅c
h1
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real6scaffoldMultiplication
What is 100*0.75?
75algebrah2h1
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real6scaffoldMultiplication
What is 100*(-2.38)?
-238algebrah3h1
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real6scaffoldAddition
What is 75+(-238)?
-163algebrah4h2,h3
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real7problem
Combining Properties of Real Numbers
https://openstax.org/
Classifying a Real Number
Classifying a Real Number
https://openstax.org/
71
real7step
What is  (4/7)((2/3)(7/4))?
2/3mc2/3|7/4|4/7|1
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real7hint
Commutative Property of Multiplication
The commutative proeprty of addition states that if a and b are real numbers, then a*b=b*a
h1
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real7scaffoldMultiplication
What is (4/7)(7/4)?
1algebrah2h1
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real7scaffoldMultiplicationwhat is 1*(2/3)?2/3algebrah3h2
75
real7step
What is  (5+8)+(-8)?
5mc8|-5|0|5
76
real7hint
Commutative Property of Addition
The commutative proeprty of addition states that if a and b are real numbers, then a+b=b+a
h1
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real7scaffoldAdditionWhat is 8+(-8)?0algebrah2h1
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real7scaffoldAdditionWhat is 0+55algebrah3h1
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real8problem
Evaluating an Algebraic Expression at Different Values
Evaluate the expression 2x-7 for each value for x.
https://openstax.org/
Evaluating Algebraic Expressions
Evaluating Algebraic Expressions
https://openstax.org/
80
real8stepIf x=0.-7algebra
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real8hintSubstitute
Plug in 0 in place of x. You then get the equation 2(0)-7.
h1
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real8scaffoldMultiplicationWhat is 2(0)?0algebrah2h1
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real8scaffoldSubtractionWhat is 0-7?-7algebrah3h2
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real8stepIf x=(1/2).-6algebra
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real8hintSubstitute
Plug in 1/2 in place of x. You then get the equation 2(1/2)-7.
h1
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real8scaffoldMultiplicationWhat is 2(1/2)?1algebrah2h1
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real8scaffoldSubtractionWhat is 1-7?-6algebrah3h2
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real8stepIf x=-4.-15algebra
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real8hintSubstitute
Plug in 0 in place of x. You then get the equation 2(-4)-7.
h1
90
real8scaffoldMultiplicationWhat is 2(-4)?-8algebrah2h1
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real8scaffoldSubtractionWhat is (-8)-7?-15algebrah3h2
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real9problem
Evaluating Algebraic Expressions At Specific Values
Evaluate each expression for the given values.
https://openstax.org/
Evaluating Algebraic Expressions
Evaluating Algebraic Expressions
https://openstax.org/
93
real9step
Solve x+5 for x=−5.
0algebra
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real9hintSubsititute
Plug in -5 in place of x. You then get the equation -5+5.
h1
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real9scaffoldAdditionWhat is -5+5?0algebrah2h1
96
real9step
Solve t/(2t−1) for t=10
10/19mc
10/19|10/21|10/20|10/22
97
real9hintSubstitute
Plug in 10 for t. You get the equation 10/(2(10)-1)
h1
98
real9scaffoldMultiplicationWhat is 2*10?20algebrah2h1
99
real9scaffoldSubtractionWhat is 20-119algebrah3h2
100
real9scaffoldSubstitute
What is 10/(2(10)-1)?
10/19algebrah4h3