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Reread them Do I make snse Did answer the question Did I follow the directions? Under name in green. Put in top drawer. Indepdnet tasks—paper slide, read, job applications, etc.
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Making sense of division
October 29, 2013 Making sense of division
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What do you know about division?
Think Pair Share
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Division Show 35 ÷ 5 with your base ten blocks Write the inverse multiplication sentence that this also represents
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35 ÷ 5 = x x = 7 The 5 tells you the number of groups! You have to figure out how many are in each group the x!
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Multiplication & Division are related
35 ÷ 5 =7 5 x 7 = 35 How are multiplication and division related? What vocabulary do we use to explain the parts of a multiplication problem? How do these words connect to the division problem
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Division Vocabulary dividend- the number that is divided
Divisor- the number that divides the dividend (one of the factors in multiplication); it is the known factor in division Quotient- the result of the division (the other factor in multiplication); the unknown factor in division The order of the factors in multiplication doesn’t affect the answer because of the commutative property, but the order in a division problem is important!
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Ungrouping When you did 35 ÷ 5, what did you ungroup to make equal groups of 5?
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When you figure it out, explain what you did in your spiral notebook
Now try… 350 ÷ 5 = x When you figure it out, explain what you did in your spiral notebook
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350 ÷ 5 = x 5 groups! Draw those first.
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350 ÷ 5 = x Now figure out how many go in each group!
We know 5 x 7 = 35, so we also know that 5 x 70 = 350! Check answer with multiplication!
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104 ÷ 4 = x Draw 4 groups! I can regroup my 104 into tens and divide that first. I can do 2 tens in each group. This means I have given out/divided 80. 104 – 80 = 24 “pieces” left to divide among the four groups…
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104 ÷ 4 = x 104 – 80 = 24 “pieces” left to divide among the four groups… 24 ÷ 4 = 6! Give 6 more to each group. Each group has 26 pieces. 104 ÷ 4 = 26.
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Check with multiplication!
104 ÷ 4 = 26 26 x 4 = 104
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