Common Core Math Tutorial and Practice


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1 Common Core Math Tutorial and Practice
2 TABLE OF CONTENTS Chapter One Number and Numerical Operations Number Sense...4 Ratios, Proportions, and Percents...12 Comparing and Ordering...19 Equivalent Numbers, Fractions, Decimals, and Percents...25 Repeating Decimals and Irrational Numbers...34 Progressmonitoring Quiz # Pencil and Paper Computations...43 Exponents...52 Square and Cube Roots...56 Proportions and Percents...60 Progressmonitoring Quiz # Order of Operations...68 Estimating Square and Cube Roots...72 Estimation...75 Accuracy of Estimates...79 Progressmonitoring Quiz # Chapter Two Geometry and Measurement Lines, Angles, and Planes...87 Pythagorean Theorem Polygons Progressmonitoring Quiz # Similar Figures Geometric Logic Constructions Nets Transformations Geometric Patterns Coordinate Geometry Transformations on Coordinate Grids Progressmonitoring Quiz # Standard and Metric Equivalents Compound Measurement Units Perimeter and Area Progressmonitoring Quiz # Surface Area and Volume Volume of Pyramids and Cones Volume and Surface Area of a Sphere Progressmonitoring Quiz #
3 Chapter Three Patterns and Algebra Patterns Graphing Modeling Situations Progressmonitoring Quiz # Graphing on Number Lines Solving Equations Solving Inequalities Progressmonitoring Quiz # Evaluating and Simplifying Progressmonitoring Quiz # Chapter Four Data Analysis, Probability, and Discrete Mathematics Representing Data Analyzing Data Lines of Best Fit Surveys Progressmonitoring Quiz # Probability Compound Events, Modeling, and Analyzing Probabilities 318 Conditional Events Progressmonitoring Quiz # Permutations, Factorial Notation, and Combinations Venn Diagrams Systematic Listing, Counting, and Reasoning Vertex Edge Graphs and Algorithmic Thinking Progressmonitoring Quiz #
4 Probability You have probably heard the word probability in your math class before. Probability is a ratio that shows how likely an event is to happen. For example, if you throw a sixsided number cube once, the probability that you will roll a 4 or a 5 is 2/6. This ratio is found by the rules below. probability = (number of desired outcomes) (number of possible outcomes) In this case, there are 6 possible outcomes since the number cube has 6 sides. So the denominator will be 6. Since there is one 4 and one 5 on the number cube, there are two desired outcomes, so the numerator is 2. Therefore, the probability of rolling a 4 or 5 is 2/6 or 1/3. Just like other ratios, probabilities can be expressed in a number of different ways. Words one in three Ratio 1:3 Fraction 1/3 Percent 33 1/3% Now that you know how probabilities are found, you can practice applying your skills to many different types of problems. Always take the time to count the total number of possible outcomes and identify the desired outcomes.
5 Example 1: Dot pulled one marble out of the bag below. What is the probability that Dot will draw a marble that is white? Step 1: Identify the number of possible outcomes in the bag. There are a total of 15 marbles in the bag, so the denominator must be 15. Step 2: Identify the number of desired outcomes. There are 3 marbles that are white. So, the numerator will be 3. Step 3: Use the information from Steps 1 and 2 to create a probability ratio. Simplify the ratio, if possible. Probability = 3/15 (3 3)/(15 3) = 1/5 The probability of drawing a white marble is 1/5.
6 Example 2: Wayne put the cards below into a bag and drew one out without looking. N E W B R U N S W I C K What is the probability that Wayne will draw a card with the letter N? Step 1: Identify the number of possible outcomes in the bag. There are 12 index cards in the bag, so there are 12 possible outcomes. Step 2: Identify the number of desired outcomes. Two of the cards in the bag have an N on them. So, there are 2 desired outcomes. Step 3: Use the information from Steps 1 and 2 to create a probability ratio. Simplify the ratio, if possible. Probability = 2:12 (2 2):(12 2) = 1:6 The probability of drawing an N out of the bag is 1:6.
7 Example 3: Leon had a bag with differentcolored pieces of paper. He drew a piece of paper out of the bag, recorded the color, and replaced it. He performed this experiment 100 times. The table below shows his results. Color Number of Times Drawn Orange 31 Blue 9 Yellow 48 Pink 12 Using the information above, most of the pieces of paper are probably what color? Step 1: Analyze the table to find the color that was drawn the most times. The color yellow was drawn the most times. Step 2: Understand the probability results. Since the yellow pieces of paper were drawn most, there are probably more yellow pieces of paper than any other color. Two specific types of of probability you will encounter are experimental and theoretical probability. Experimental probability, like probability, is a ratio. Experimental probability is very specific because it refers to the results of a particular experiment. It is the ratio of the number of times an event occurs to the total number of trials.
8 Another way to say this is: experimental probability = (number of times desired outcomes occurred) (number of trials) You can find experimental probability only after actually carrying out the experiment. Theoretical probability, unlike experimental probability, is not based on the actual results of an experiment, but on the possible results of the experiment. Theoretical probability is the ratio of the total number of ways an event, or a desired outcome, can occur, to the total number of possibilities. So unlike experimental probability, you can figure out the theoretical probability before you actually perform the experiment. Example 4: Srich decided to flip a quarter 100 times and to record the results of his experiment. What is the theoretical probability of Srich s quarter landing on tails? Step 1: Identify the total number of possible outcomes i.e., how many ways the coin can land. There are only two ways the coin can land heads up, or tails up. Step 2: Identify the total number of ways the desired outcome i.e., the coin landing on tails can occur. There is only one way the coin can land tails up tails up! Step 3: Use the information from Steps 1 and 2 to create a theoretical probability ratio. theoretical probability = 1 2 The theoretical probability of Srich s coin landing on tails is 1/2, 1 out of 2, or 50%.
9 Example 5: Srich has completed his coinflipping experiment and recorded his results in the table shown below. Cointossing Experiment Heads Tails Based on the information in the table, what is the experimental probability of Srich s coin landing on tails? Step 1: Identify the total number of trials. Srich tossed the coin 100 times. Step 2: Identify the number of times the coin landed on tails. The coin landed on tails 62 times. Step 3: Use the information from Steps 1 and 2 to create an experimental probability ratio. Simplify the ratio if possible. experimental probability = 62 = The experimental probability of Srich s coin landing on tails is 31/50, or 31 out of 50, or 62%.
10 Practice A B Express all the following probabilities as a percent, a ratio, and a fraction. What is the probability that in one spin an even number will come up on spinner B? 2. a three will come up on spinner A? 3. a number greater than 5 will come up on spinner B? 4. a number greater than 5 will come up on spinner A? 5. an odd number will come up on spinner A?
11 Name Date Practice A B Express all the following probabilities as a percent, a ratio, and a fraction. What is the probability that in one spin an even number will come up on spinner B? 50%, 1:2, 1/2 2. a three will come up on spinner A? 25%, 1:4, 1/4 3. a number greater than 5 will come up on spinner B? 37.5%, 3:8, 3/8 4. a number greater than 5 will come up on spinner A? 16.6%, 1:6, 1/6 5. an odd number will come up on spinner A? 66.6%, 2:3, 2/3
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