Fifth Grade Math Alignment Document Numbers and Operations Number of Problems: 15 1. Analyze relationships among numbers and the four basic operations, compute fluently, and make reasonable estimates. Objective a. Compare and order integers, decimals to the nearest thousandths, like and unlike fractions, and mixed numbers using >, <, and =. (DOK 1) Envision or Investigation 6–8, 12–13, 230–231 Unit 4: 61–62, 64–65, 66–67, 68–69, 73–75, 77–78, 82–84, 119 Unit 6: 39–40, 41–42, 44, 45– 46, 47–48, 50– 51, 52–55, 57, 77, 80 PLD Level Proficient: Compare integers, decimals, like and unlike fractions, and mixed numbers. Basic: Order integers, decimals, like and unlike fractions, and mixed numbers. Assessment Item 1. We measured the height of the following students in inches and placed the results of our measurements in the chart below. Name Height Robert 52.7 John 51.5 Andrew 52.9 Meagan 50.4 Latecia 47.2 Of the following individuals, which one is the shortest? A. Andrew B. Latecia * C. Meagan D. Robert Depth of Knowledge Level: 1 Performance Level: Proficient 2. Which of the following set of numbers is ordered from greatest to least? A. 1,321.101 1,321.11 1,232.110 1,231.111 B. 1,321.11 1,321.101 1,232.110 1,231.111 * C. 1,321.101 1,321.11 1,231.111 1,232.110 D. 1, 231.111 1,232.110 1,321.101 1,321.11 Depth of Knowledge Level: 1 Performance Level: Basic Suggested Teaching Strategy Using a string about 3 feet long, mark 0, 1, (or 0, 1, 2, and 3). Give students post-it notes with integers such as –1 and 4; fractions such as 7 1 5 3 , 2 , 1 , and 2 ; and decimals such as 0.3, 8 3 9 4 1.45, and 0.78. Have them place the post-it notes on the string in the order and appropriate place that they think it should be found. Have other students explain why they agree or disagree with the placements. b. Compose and decompose seven-digit numbers and decimals through 4–5, 10–11, 72– 73 Unit 6: 24, 26– 27, 28–29, 31, 33–34, 35–36, 37, 86, 91, 92, 97, 102, 107, 112, 115, 117 Proficient: Compose and decompose sevendigit numbers and decimals through thousandths. 1. What number represents four hundred thousand, four and four tenths in standard form? A. 404,000.00 B. 400,004.04 C. 400,000.4 D. 400,004.4 * Depth of Knowledge Level: 1 Performance Level: Proficient Give students 2 seven-digit numbers, like 1,110,223 and 1,112,323. Students may notice that the millions, hundred thousands, ten thousands, tens and ones digits are the same, but the digits in the thousands and hundreds places are greater in 1,112,323. Therefore, 1,112,323 would be greater. This comparison could be represented as 1,110,223 < 1,112,323 or 1,112,323 > 1,110,223. It is important that students recognize that both statements are true. thousandths in word, standard, and expanded forms. (DOK 1) Not only can the greater than (>) and less than (<) signs be used but students should also realize that if 1,110,223 < 1,112,323, then 1,110,223 ≠ 1,112,323. Unit 8: 97, 102 Select one of the two quantities, say 1,110,223. What two numbers can be added together to create this sum? Students should create as many pairs of numbers as they can. The numbers can be recorded in equation form: 1,110,223 = 110,000 + 1,000,223 1,110,223 = 1,000,000 + 110,223 1,110,223 = 1,100,000 + 10,223 and so on. The sum is the whole and each addend is a part. The way in which the equation is written indicates decomposition. c. Identify factors and multiples of 102–104, 270– 271 Unit 1: 29–33, Basic: Identify factors and multiples of whole numbers. 1. Which set of numbers contains factors of 8? A. 1, 2, 4, 8 * B. 2, 4, 6, 8 Assign pairs of students a composite number, such as 12, 16, 18, 24, 30, 36, and 40. Ask each pair to find all the factors of their assigned number. Have the pairs share the numbers whole numbers. (DOK 1) 34–35, 49–51, 54–56, 59–60, 121–122 C. 4, 8, 12, 16 D. 8, 16, 24, 36 Depth of Knowledge Level: 1 Performance Level: Basic (factors) they found. Ask the other pairs to verify that they have found all of the factors and that those listed are accurate. Then, ask students to count the number of factors. What do they notice? In the given set above, they should notice that 16 and 36 have an odd number of factors. Why is that? What other numbers would have an odd number of factors? Why? Using grid paper, have students create the rectangles that would have the factors as the lengths of the sides. [Note that you will need to establish that the length of a side of the grid’s squares will be one length-unit. Each square on the grid will be one area-unit.] What do they notice? They should notice that for the numbers that have an odd number of factors, one of the rectangles is a square d. Model and distinguish between prime and composite numbers. (DOK 1) 106–108 Unit 1: 37–38, 55, 63 e. Model and identify equivalent fractions 226–229, 234– 236, 396–397 Unit 4: 23–24, Proficient: Model prime and composite numbers. Basic: Distinguish between prime and composite numbers. Proficient: Model equivalent fractions. Basic: Identify equivalent fractions 1. Which set of numbers contains only prime numbers? A. 1, 2, 3 B. 5, 17, 51 C. 7, 11, 53 * D. 8, 12, 54 Depth of Knowledge Level: 1 Performance Level: Basic Give pairs of students a bag of square tiles (up to 24 tiles). Ask students to take out 2 tiles. How many different ways can the tiles be put together to make a rectangle? 1. What fraction is equivalent to the shaded regions in the drawing below? A. 7/12 B. 10/12 Models for fractions at this grade level should focus on continuous quantities such as length and area rather than on discrete models that use collections of objects. As students model equivalent fractions, they can use models. Give Record how many different ways the tiles can be configured for each number. For example, with 2 tiles, there is 1 way. The same is true for 3 tiles. With 4 tiles, you can make a rectangle that is 1 x 4 or 2 x 2 so there are 2 ways. Continue through 24. What do students notice? They should notice that for prime numbers, there is only 1 way to make the rectangle. Composite numbers have more than one way. including conversion of improper fractions to mixed numbers and vice versa. (DOK 1) 28–29, 30–31, 32–33, 36–39, 42–43, 44, 49– 51, 59–61, 71– 72, 73–74, 77– 78, 122–123 Unit 6: 25–26, 28–29, 34–35, 36–37, 67–68, 69–70, 74–76, 80 including conversion of improper fractions. C. 5/24 D. 10/24 * Depth of Knowledge Level: 2 Performance Level: Basic 2. What is the correct representation of the mixed number 5 7/8 as an improper fraction? A. 35/8 B. 40/8 C. 43/8 D. 47/8 * Depth of Knowledge Level: 1 Performance Level: Basic 3. A store has 12 slices of pizza. If they sold 3 slices, what fraction of pizza is left? A. 1/4 B. 3/9 C. 3/4 * D. 9/3 Depth of Knowledge Level: 2 Performance Level: Basic students a strip of adding machine tape. This represents one unit of length. If it is used to measure length, a beginning (0) point needs to be indicated as well as the end of the unit (1). Have students mark those points. Direct students to measure the length of some object, such as the width of their desk, their arm and so on. It will probably not measure exact. Ask them how we could get a more accurate measure. They usually suggest folding the paper to find the halfway mark between 0 and 1. When they fold, they will notice that the fold creates two equal lengths, parts of the whole unit. They continue folding until they have found 16ths.] This is a length model for fractions. When all the folds are made, students will notice that, for example, 1 2 4 8 , , , and all represent the same length. 2 4 8 16 Area models can also be used in a similar way. To extend this objective, ask students if there is ever a time when 1 4 and do not represent the 2 8 same quantity. Students should note that they are only equivalent when they represent a quantity made from the same unit. If the original whole, or unit, is not the same, then their equivalency cannot be assumed. f. Add, subtract, multiply, and divide (with and without remainders) using nonnegative rational numbers. (DOK 1) 24–26, 30–32, 38– 48, 60–71, 84– 87, 90–100, 110– 112, 122–139, 158– 163, 170–190, 256– 258, 262–269, 278– 287, Proficient: Add, subtract, multiply, and divide using nonnegative rational numbers. 1. Using the recipe below, how much more sugar than flour was used? A. 1 ¼ * B. 2 ¼ C. 1 ¾ D. 2 ¾ Depth of Knowledge Level: 2 Performance Level: Proficient Give students a non-negative rational number 3 8 such as 2 . Ask the students to find three pairs 3 8 of numbers whose sum is 2 . [Note, you can use any operation and any non-negative rational number as the sum, difference, product or quotient in a similar way.] Allow students to work for about 3 minutes. Record their pairs of numbers. Note the numbers they find. For example, if they did not find a pair that uses two improper fractions, you can ask them to find another pair with that condition. This is an opportunity to push their level of thinking by 288–289, 422– 423 Unit 1: 29–31, 41, 45–47, 56, 57, 61, 71–74, 83–84, 86–87, 94–95, 98, 121– 122, 123–124, 127–128, 137– 139, 143–144, 148–149 Unit 3: 91–92 Unit 4: 95–96, 98–99, 102– 103, 104–105, 108, 109–110 Unit 6: 24, 37, 86, 87–88, 89, 92, 97, 98, 102, 103, 106, 107, 108–109, 110– 111, 114, 117 Unit 8: 97, 102 making conditions on the numbers in the pairs. Using this reversibility-type question, the DOK level raises from DOK 1 to at least DOK 2. g. Estimate sums, differences, products, and quotients of non-negative rational numbers to include strategies such as front-end rounding, benchmark numbers, compatible numbers, and rounding. (DOK 2) 30–32, 62–63, 65, 68, 70, 86–87, 124– 125, 136–137, 174– 177, 184–185, 284– 285 Unit 2: 41, 42– 43, 47, 48, 64, 71, 83, 105, 110 Unit 3: 44–45, 51, 58, 64, 69, 97 Unit 6: 90–91, 105–106, 113 Unit 7: 54–56, 62, 68, 75, 93, 96, 110, 114 Unit 9: 35, 41, 68, 72, 93, 98, 104, 109 Advanced: Justify estimations of sums, differences, products, and quotients of nonnegative rational numbers. Proficient: Estimate sums, differences, products, and quotients of nonnegative rational numbers. 1. John went to the store and bought some snacks for $4.25, a water gun for $7.87, and some school supplies for $8.49. About how much money did he spend? A. $19 B. $20 * C. $22 D. $23 Depth of Knowledge Level: 2 Performance Level: Proficient At this grade level, students should see and use a variety of strategies, including front-end, benchmark numbers, rounding, and compatible numbers. Present a contextual situation such as: I need to go shopping after school today and I forgot to bring my checkbook. I have only $24 in cash. I need to buy the following items. Without adding the costs, decide if I have enough money. Be able to explain how you decided and what method you used. Item Cost Steak $6.53 Lettuce $1.39 Ice Cream $3.69 Milk $1.89 Cereal $3.29 Apples $2.79 Yogurt $2.99 Juice $1.74 Show this list on the overhead (or ELMO) so that you can control the amount of time that students have to look at it. Because they are estimating, you want to restrict the amount of time so that they are forced to estimate rather than compute. After a minute or so, ask students to share their ideas. What types of strategies did they use? Record their strategies and ask students to justify why that strategy would be appropriate for this context. They should note that because you will also have to compensate for the tax that will be paid, they should over-estimate so that you will have enough money for the food and the tax. There is no right or wrong estimate—an estimate with computations is related to the context in which it is used.