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1 | Problem Name | Row Type | Title | Body Text | Answer | answerType | HintID | Dependency | mcChoices | Images (space delimited) | Parent | OER src | openstax KC | KC | Taxonomy | |||||||||||
2 | real1 | problem | 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 | real1 | step | What is 15/5? | 3 | numeric | |||||||||||||||||||||
4 | real1 | hint | Fraction Explanation | 15/5 implies having 15 pieces needed to be split amongst 5 people. | h1 | |||||||||||||||||||||
5 | real1 | scaffold | Dividing | We can express the above idea as 15 divided by 5. What is that equal to? | 3 | numeric | h2 | h1 | ||||||||||||||||||
6 | real1 | step | What is 13/25? | 0.52 | numeric | |||||||||||||||||||||
7 | real1 | hint | Fraction Explanation | 13/25 implies having 13 pieces needed to be split amongst 25 people. | h1 | |||||||||||||||||||||
8 | real1 | scaffold | Dividing | We can express the above idea as 13 divided by 25. What is that equal to? | 0.52 | numeric | h2 | h1 | ||||||||||||||||||
9 | real1 | step | What is -5/7? (To the nearest hundredth) | -0.71 | mc | -0.25|-0.71|0.57|-0.63 | ||||||||||||||||||||
10 | real1 | hint | Dividing | We can solve this problem by dividing -5 into 7 pieces. | h1 | |||||||||||||||||||||
11 | real2 | problem | 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 | |||||||||||||||||||
12 | real2 | step | 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. | 24/5 | algebra | ||||||||||||||||||||
13 | real2 | hint | Hours in a Day | The day has 24 hours. | h1 | |||||||||||||||||||||
14 | real2 | hint | Number Line | The problem can be solved by drawing a number line of length 24 and separating it into 5 equal parts. | h2 | h1 | ||||||||||||||||||||
15 | real2 | hint | Fraction | The separation of the number line can be represented as a fraction or a decimal. | h3 | h2 | ||||||||||||||||||||
16 | real2 | step | 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. | 25/6 | algebra | ||||||||||||||||||||
17 | real2 | hint | Number Line | The problem can be solved by drawing a number line of length 75 and separating it into 18 equal parts. | h1 | |||||||||||||||||||||
18 | real2 | hint | Fraction | The separation of the number line can be represented as a fraction or a decimal. | h2 | h1 | ||||||||||||||||||||
19 | real2 | hint | Simplify | The process can be made easier by noticing both the length of the ribbon and the number of students are divisible by 6 | h3 | h2 | ||||||||||||||||||||
20 | real3 | problem | Sets of Numbers | https://openstax.org/ | Classifying a Real Number | Classifying a Real Number | https://openstax.org/ | |||||||||||||||||||
21 | real3 | step | Which of the following numbers does not belong in the set of natural number? | 0 | mc | 0|1|2|3 | ||||||||||||||||||||
22 | real3 | hint | Counting | The natural numbers consist of the numbers used for counting. | h1 | |||||||||||||||||||||
23 | real3 | hint | Counting | Counting generally starts form the number 1. | h2 | h1 | ||||||||||||||||||||
24 | real3 | step | Which of the following numbers belongs to the set of whole numbers? | 0/4 | mc | -2|0/4|4.5|3/7 | ||||||||||||||||||||
25 | real3 | hint | Whole Numbers | The set of whole numbers is the set of natural numbers plus zero. | h1 | |||||||||||||||||||||
26 | real3 | scaffold | Zero Fractions | What does any fraction of the form 0/x simplify to? (where x is nonzero) | 0 | algebra | h2 | h1 | ||||||||||||||||||
27 | real3 | step | 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 | ||||||||||||||||||||
28 | real3 | hint | 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 | |||||||||||||||||||||
29 | real3 | hint | Set of Irrational Numbers | The set of irrational numbers is the set of numbers that are not rational, are nonrepeating, and are nonterminating | h2 | h1 | ||||||||||||||||||||
30 | real3 | hint | Properties of π | π is not rational, nonrepeating, and nonterminating | h3 | h2 | ||||||||||||||||||||
31 | real4 | problem | Properties of Real Numbers | https://www.oercommons.org/ | Classifying a Real Number | Real Numbers | OER Commons | |||||||||||||||||||
32 | real4 | step | The Closure Property | If a and b are both real numbers, then the sum a+b is always a | Real Number | mc | Natural Number|Whole Number|Real Number|Rational Number | |||||||||||||||||||
33 | real4 | hint | Closure 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 | |||||||||||||||||||||
34 | real4 | step | Commutative Property | If a and b are both real numbers and a*b = c, then what is b*a? | c | numeric | ||||||||||||||||||||
35 | real4 | hint | Commutative Property of Addition | The commutative proeprty of addition states that if a and b are real numbers, then a+b=b+a | h1 | |||||||||||||||||||||
36 | real4 | hint | Commutative Property of Multiplication | The commutative proeprty of addition states that if a and b are real numbers, then a*b=b*a | h2 | h1 | ||||||||||||||||||||
37 | real5 | problem | 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 | real5 | step | What is (3*2)**2-4(6+2)? | 4 | algebra | |||||||||||||||||||||
39 | real5 | hint | Parentheses | The first step is to simplify the parentheses. | h1 | |||||||||||||||||||||
40 | real5 | scaffold | Parentheses | What is 3*2? | 6 | algebra | h2 | h1 | ||||||||||||||||||
41 | real5 | scaffold | Parentheses | What is 6+2? | 8 | algebra | h3 | h1 | ||||||||||||||||||
42 | real5 | hint | Exponent | The next step is to simplify any exponents. | h4 | h2,h3 | ||||||||||||||||||||
43 | real5 | scaffold | Exponent | What is 6**2? | 36 | algebra | h5 | h4 | ||||||||||||||||||
44 | real5 | hint | Multiplication | The next step is to simplify multiplication and division. | h6 | h5 | ||||||||||||||||||||
45 | real5 | scaffold | Multiplication | What is 4*8? | 32 | algebra | h7 | h6 | ||||||||||||||||||
46 | real5 | hint | Subtraction | The final step is to simplify addition and subtraction. | h8 | h7 | ||||||||||||||||||||
47 | real5 | scaffold | Subtraction | What is 36-32? | 4 | algebra | h9 | h8 | ||||||||||||||||||
48 | real5 | step | What is 7(5*3)-2((6-3)-4**2)+1 | 132 | algebra | |||||||||||||||||||||
49 | real5 | hint | Parentheses | The first step is to simplify the parentheses. | h1 | |||||||||||||||||||||
50 | real5 | scaffold | Parentheses | What is 5*3? | 15 | algebra | h2 | h1 | ||||||||||||||||||
51 | real5 | scaffold | Parentheses | What is 6-3? | 3 | algebra | h3 | h1 | ||||||||||||||||||
52 | real5 | scaffold | Parentheses | What is 4**2? | 16 | algebra | h4 | h2,h3 | ||||||||||||||||||
53 | real5 | scaffold | Parentheses | What is 3-16? | -13 | algebra | h5 | h4 | ||||||||||||||||||
54 | real5 | hint | Multiplication | The next step is to simplify multiplication and division. | h6 | h5 | ||||||||||||||||||||
55 | real5 | scaffold | Multiplication | What is 7*15? | 105 | algebra | h7 | h6 | ||||||||||||||||||
56 | real5 | scaffold | Multiplication | What is (-2)*(-13)? | 26 | algebra | h8 | h7 | ||||||||||||||||||
57 | real5 | hint | Addition | The final step is to simplify addition and subtraction. | h9 | h8 | ||||||||||||||||||||
58 | real5 | scaffold | Addition | What is 105+26+1? | 132 | algebra | h10 | h9 | ||||||||||||||||||
59 | real6 | problem | Distributive Property | https://openstax.org/ | Performing Calculations Using the Order of Operations | Performing Calculations Using the Order of Operations | https://openstax.org/ | |||||||||||||||||||
60 | real6 | step | What is 4(12+(-7))? | 20 | algebra | |||||||||||||||||||||
61 | real6 | hint | 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 | |||||||||||||||||||||
62 | real6 | scaffold | Multiplication | What is 4*12? | 48 | algebra | h2 | h1 | ||||||||||||||||||
63 | real6 | scaffold | Multiplication | What is 4*(-7)? | -28 | algebra | h3 | h1 | ||||||||||||||||||
64 | real6 | scaffold | Addition | What is 48+(-28)? | 20 | algebra | h4 | h2,h3 | ||||||||||||||||||
65 | real6 | step | What is 100(0.75+(-2.38))? | -163 | mc | -149|-163|-313|-326 | ||||||||||||||||||||
66 | real6 | hint | 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 | |||||||||||||||||||||
67 | real6 | scaffold | Multiplication | What is 100*0.75? | 75 | algebra | h2 | h1 | ||||||||||||||||||
68 | real6 | scaffold | Multiplication | What is 100*(-2.38)? | -238 | algebra | h3 | h1 | ||||||||||||||||||
69 | real6 | scaffold | Addition | What is 75+(-238)? | -163 | algebra | h4 | h2,h3 | ||||||||||||||||||
70 | real7 | problem | Combining Properties of Real Numbers | https://openstax.org/ | Classifying a Real Number | Classifying a Real Number | https://openstax.org/ | |||||||||||||||||||
71 | real7 | step | What is (4/7)((2/3)(7/4))? | 2/3 | mc | 2/3|7/4|4/7|1 | ||||||||||||||||||||
72 | real7 | hint | Commutative Property of Multiplication | The commutative proeprty of addition states that if a and b are real numbers, then a*b=b*a | h1 | |||||||||||||||||||||
73 | real7 | scaffold | Multiplication | What is (4/7)(7/4)? | 1 | algebra | h2 | h1 | ||||||||||||||||||
74 | real7 | scaffold | Multiplication | what is 1*(2/3)? | 2/3 | algebra | h3 | h2 | ||||||||||||||||||
75 | real7 | step | What is (5+8)+(-8)? | 5 | mc | 8|-5|0|5 | ||||||||||||||||||||
76 | real7 | hint | Commutative Property of Addition | The commutative proeprty of addition states that if a and b are real numbers, then a+b=b+a | h1 | |||||||||||||||||||||
77 | real7 | scaffold | Addition | What is 8+(-8)? | 0 | algebra | h2 | h1 | ||||||||||||||||||
78 | real7 | scaffold | Addition | What is 0+5 | 5 | algebra | h3 | h1 | ||||||||||||||||||
79 | real8 | problem | 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 | real8 | step | If x=0. | -7 | algebra | |||||||||||||||||||||
81 | real8 | hint | Substitute | Plug in 0 in place of x. You then get the equation 2(0)-7. | h1 | |||||||||||||||||||||
82 | real8 | scaffold | Multiplication | What is 2(0)? | 0 | algebra | h2 | h1 | ||||||||||||||||||
83 | real8 | scaffold | Subtraction | What is 0-7? | -7 | algebra | h3 | h2 | ||||||||||||||||||
84 | real8 | step | If x=(1/2). | -6 | algebra | |||||||||||||||||||||
85 | real8 | hint | Substitute | Plug in 1/2 in place of x. You then get the equation 2(1/2)-7. | h1 | |||||||||||||||||||||
86 | real8 | scaffold | Multiplication | What is 2(1/2)? | 1 | algebra | h2 | h1 | ||||||||||||||||||
87 | real8 | scaffold | Subtraction | What is 1-7? | -6 | algebra | h3 | h2 | ||||||||||||||||||
88 | real8 | step | If x=-4. | -15 | algebra | |||||||||||||||||||||
89 | real8 | hint | Substitute | Plug in 0 in place of x. You then get the equation 2(-4)-7. | h1 | |||||||||||||||||||||
90 | real8 | scaffold | Multiplication | What is 2(-4)? | -8 | algebra | h2 | h1 | ||||||||||||||||||
91 | real8 | scaffold | Subtraction | What is (-8)-7? | -15 | algebra | h3 | h2 | ||||||||||||||||||
92 | real9 | problem | 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 | real9 | step | Solve x+5 for x=−5. | 0 | algebra | |||||||||||||||||||||
94 | real9 | hint | Subsititute | Plug in -5 in place of x. You then get the equation -5+5. | h1 | |||||||||||||||||||||
95 | real9 | scaffold | Addition | What is -5+5? | 0 | algebra | h2 | h1 | ||||||||||||||||||
96 | real9 | step | Solve t/(2t−1) for t=10 | 10/19 | mc | 10/19|10/21|10/20|10/22 | ||||||||||||||||||||
97 | real9 | hint | Substitute | Plug in 10 for t. You get the equation 10/(2(10)-1) | h1 | |||||||||||||||||||||
98 | real9 | scaffold | Multiplication | What is 2*10? | 20 | algebra | h2 | h1 | ||||||||||||||||||
99 | real9 | scaffold | Subtraction | What is 20-1 | 19 | algebra | h3 | h2 | ||||||||||||||||||
100 | real9 | scaffold | Substitute | What is 10/(2(10)-1)? | 10/19 | algebra | h4 | h3 |