11:00 Math Week 1 Tuesday
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11:00 Math Week 1 Tuesday

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Tuesday, April 10

Tuesday, April 10

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11:00 Math Week 1 Tuesday 11:00 Math Week 1 Tuesday Presentation Transcript

  • • 1. Review: Division with Decimals• 2. Data Vocabulary (Mean, Median, Mode, Range)• 3. Working with Data• 4. Practice
  • • 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 )
  • • 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?
  • • 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.
  • • 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
  • • 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.
  • •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
  • • 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.
  • • 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.
  • • 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