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11:00 Math Week 1 Tuesday

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Tuesday, April 10

Published in: Education, Technology
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11:00 Math Week 1 Tuesday

  1. 1. • 1. Review: Division with Decimals• 2. Data Vocabulary (Mean, Median, Mode, Range)• 3. Working with Data• 4. Practice
  2. 2. • A bag of cat litter costs $11.73. Each ounce costs $1.20. How many ounces are there in the bag? Step 1: Set up the Step 2: Move the decimal in division problem. You are the divisor to the right to trying to find how many make it a whole number. Then, move the decimal in $1.20’s are in $11.73. the dividend the same number of places. ) ) Step 3: Divide 9.775 ounces )
  3. 3. • One serving of potato chips is 1.75 ounces. The entire can of chips holds 15.75 ounces. How many servings are in the can?
  4. 4. • Data is information that is collected and analyzed.• The mean is the average value of a data set.• The median is the middle value of a data set listed in order from least to greatest.• The mode is the item that occurs most often in a data set.• The range is the difference between the greatest and least items of a data set.
  5. 5. • Robin is training for • Find the mean of a 5-kilometer race. Robin’s running Each day she runs 5 kilometers and data. records her time to •Step 1: Find the sum of all the items in the data set. 154 the nearest minute. Here is the data she •Step 2: Count the number of items in the data set. 7 collected one week: 20, 24, 22, 22, 21, 2 •Step 3: Divide the sum by the number of items in the data set. 0, 25. 154 ÷ 7 = 22 minutes
  6. 6. • Robin is training for • Find the median of a 5-kilometer race. Robin’s running Each day she runs 5 kilometers and data. records her time to •Step 1: List items in order from least to greatest. the nearest minute. 20, 20, 21, 22, 22, 24, 25 Here is the data she •Step 2: Count the number of items in the data set. collected one week: 7 items 20, 24, 22, 22, 21, •Step 3: If the number of items is odd, identify the middle value of the ordered 20, 25. list. 20, 20, 21, 22, 22, 24, 25 The median is 22 minutes.
  7. 7. •Step 1: List items in order from least to• Find the median of greatest. 20, 20, 21, 22, 22, 24 this data: •Step 2: Count the number of items in the 20, 24, 22, 22, 21, data set. 6 items 20. •Step 3: If the number of items is even, find the average (mean) of the two middle values. 20, 20, 21, 22, 22, 24 21 + 22 = 43 ÷ 2 = 21.5 2
  8. 8. • Robin is training for • Find the mode of a 5-kilometer race. Robin’s running Each day she runs 5 kilometers and data. records her time to •Step 1: Group items in the data set that are the same. the nearest minute. 20, 20 21 22,22 24 25 Here is the data she •Step 2: Find the item(s) that occur(s) most often. A data set can have one, more collected one week: than one, or no modes. 20, 24, 22, 22, 21, •The mode for this data set is 20 minutes 20, 25. and 22 minutes.
  9. 9. • Robin is training for • Find the range of a 5-kilometer race. Robin’s running Each day she runs 5 kilometers and data. records her time to •Step 1: Identify the items with the greatest value and the least value. the nearest minute. Here is the data she 25 20 •Step 2: Subtract. collected one week: 20, 24, 22, 22, 21, 2 25-20 = 5 •The range is 5 minutes. 0, 25.
  10. 10. • 1-4: Refer to Barbara’s Running Data. Find each measure. Round to the nearest minute, if necessary.• 5-12: Find the measure for the given data.• 13-18: Solve (These are challenging)• 19-22: Matching

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