
Module 1 Topic F Lesson 13/14
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Mathematics
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5th Grade
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Medium
Standards-aligned
Noah Webster
Used 3+ times
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8 Slides • 2 Questions
1
Module 1 Topic F Lesson 13/14
Dividing with Decimals Part 1
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Important Lesson Vocabulary
Division: breaking a number up into equal-sized groups
Dividend: a number that you divide
Divisor: a number that you divide by
Quotient: the answer to a division problem
Remainder: how much you have left over at the end of a division problem when you cannot make any more groups
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20 ÷ 5 = 4
At the right I have 20 circles. I want to divide them by 5 (put them into groups of 5). I can model this by putting them in rows, with 5 in each row. I will be able to make 4 rows.
So my answer is 4; I can make 4 groups of 5 with 20 circles.
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Fill in the Blanks
Type answer...
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Consider the problem:
3.5 ÷ 5How could I divide 3 ones and 5 tenths into groups of 5 ones?
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Let's convert 3.5 to something we can work with!
First I will change it to unit form: 3.5 = 3 ones and 5 tenths
Next I will unbundle my 3 ones into 30 tenths, for a total of 35 tenths. Now I have
35 tenths ÷ 5
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Fill in the Blanks
Type answer...
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At the right is an array representing 35 tenths in groups of 5. We were able to make 7 rows.
So our answer to the problem is 7 tenths.
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Now we simply have to convert our 7 tenths back to standard form to get our final answer: 0.7
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To Recap, for a problem like
4.2 ÷ 6Convert your decimal to unit form: 4.2 = 42 tenths
How many groups of 6 can you make with 42 tenths? In this case, you can make 7 groups of 6, so your answer is 7 tenths
Convert your answer back to standard form: 7 tenths = 0.7
Module 1 Topic F Lesson 13/14
Dividing with Decimals Part 1
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