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Multiplying with 6 MAFS.3.OA.3.7
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Lesson Opening Solve the two problems below. Write the equation you used to solve the problem. 1.Tiana arranged 12 flowers in 4 vases. She put the same number of flowers in each vase. How many flowers are in each vase? 2.Wyatt packed 4 boxes of cans for a food drive. He put 7 cans in each box. How many cans of food did Wyatt pack?
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Lesson Opening Solve the two problems below. Write the equation you used to solve the problem. 1.Tiana arranged 12 flowers in 4 vases. She put the same number of flowers in each vase. How many flowers are in each vase? 2.Wyatt packed 4 boxes of cans for a food drive. He put 8 cans in each box. How many cans of food did Wyatt pack? 12 flowers in 4 vases (groups) 12 ÷ 4 = 3 or 4 x ____ = 12 There are 3 flowers in each vase. 4 boxes (groups) of 8 cans each 4 x 8 = 32 Wyatt packed 32 cans of food.
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Multiplying with 6 Write your 3s facts from 0 to 10: 0 × 3 = 1 × 3 = 2 × 3 = 3 × 3 = 10 × 3 =
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Multiplying with 6 Doubling your 3 fact is a strategy you can use for a 6 fact. 6 x 7
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Multiplying with 6 Doubling your 3 fact is a strategy you can use for a 6 fact. 6 x 7 This shows 3 groups of 7 or 3 × 7, which is 21.
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Multiplying with 6 Doubling your 3 fact is a strategy you can use for a 6 fact. 6 x 7 This shows 3 groups of 7 or 3 × 7, which is 21. Since this is also 21, you can double 21, which is 42.
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Multiplying with 6 Doubling your 3 fact is a strategy you can use for a 6 fact. So, 6 × 7 = 42 This shows 3 groups of 7 or 3 × 7, which is 21. Since this is also 21, you can double 21, which is 42.
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Multiplying with 6 So, what is… 6 groups of 3 (6 x 3) 6 groups of 6 (6 x 6) 6 groups of 8 (6 x 8) 6 groups of 7 (6 x 7) 6 groups of 9 (6 x 9) Think: 3 × 3 = 9, now double 9 Think: 3 × 6 = 18, now double 18 Think: 3 × 8 = 24, now double 24 Think: 3 × 7 = 21, now double 21 Think: 3 × 9 = 27, now double 27
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 I don’t know what 6 x 7 is, but I can figure out what 5 x 7 is.
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 I don’t know what 6 x 7 is, but I can figure out what 5 x 7 is. 5 x 7 = 35
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 5 x 7 = 35 Now, all I have to do is ADD another group of 7.
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 5 x 7 = 35 35 + 7 = 42
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 So, 6 x 7 = 42
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 This is just using the Distributive Property.
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 This is just using the Distributive Property. First, I multiplied 5 x 7, (5 x 7) Then I multiplied 1 x 7, (1 x 7) Then I added the products together.
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 5 x 7 1 x 7
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Multiplying with 6 Using your 5 fact and adding another group is another strategy. 6 x 7 5 x 7 1 x 7 (5 x 7) + (1 x 7) = 6 x 7 = 42
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Multiplying with 6 So, what is… 6 groups of 3 (6 x 3) 6 groups of 6 (6 x 6) 6 groups of 8 (6 x 8) 6 groups of 7 (6 x 7) 6 groups of 9 (6 x 9) Think: 5 × 3 = 15, now add another group of 3, 15 + 3 = … Think: 5 × 6 = 30, now add another group of 6, 30 + 6 = … Think: 5 × 8 = 40, now add another group of 8, 40 + 8 = … Think: 5 × 7 = 35, now add another group of 7, 35 + 7 = … Think: 5 × 9 = 45, now add another group of 9, 45 + 9 = …
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Multiplying with 6 Let’s look at our Multiplication Table…
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Multiplying with 6 Find all the multiples of 6… The ones place has a pattern of 2, 8, 4, 0, 6… All the multiples are even numbers
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Multiplying with 6 Let’s look at our 100 Chart…
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Multiplying with 6 Look at the multiples of 6…
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Multiplying with 6 Look at the multiples of 6… All the multiples of 6 are also all multiples of 2. Every third multiple of 2 is a multiple of 6. All multiples of 6 are even numbers.
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Multiplication Shapes Use the chart to help you explore polygons. You will need: Hexagon pattern blocks Triangle pattern blocks Multiplication Shapes Chart
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There’s Always Another Way Use the chart to help you explore multiplying by 6 and using the Distributive Property. You will need: There’s Always Another Way Chart
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Closing What is one strategy you used for multiplying with 6? Double the 3 fact (For 6 × 7: 7 x 3 = 21, then, double 21 = 42.) Use the Distributive Property (For 6 x 7: 5 x 7 = 35, then add another group of 7, 35 + 7 = 42 This is the same as (5 x 7) + (1 x 7) = 42 Draw it/model it Use a tool (100 chart, multiplication chart)
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Bonus Question When you multiply any number by 6, is the product always odd or always even? How do you know? So, if you had to multiply 6 and 39, which number could NOT be your product? a.234 b.235 c.238 d.242
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Exit Ticket Ants have 6 legs. How many legs do 9 ants have? 1.Model the problem. 2.Write an equation that corresponds to it. 3.Write another equation that corresponds to it. 4.Write the answer to the problem in a complete sentence.
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