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3.5 Dividing <strong>Rational</strong> <strong>Number</strong>s<br />
FOCUS<br />
• Solve problems that<br />
require dividing<br />
rational numbers.<br />
1<br />
Marcel has 2 cups of juice.<br />
4<br />
3<br />
He pours of a cup of juice into each glass.<br />
4<br />
How many glasses can Marcel fill?<br />
Write a division statement to describe<br />
this situation.<br />
Investigate 2<br />
➤ The 3rd, 4th, and 5th terms of a number pattern are: 27, 18, 12<br />
• To get the next term, you divide the term before it by one of these rational<br />
2 3 2 3<br />
numbers: , , , <br />
3 2 3 2<br />
Which number is correct? How do you know?<br />
• Determine the 6th and 7th terms of the pattern.<br />
Describe your strategy and show your work.<br />
• Determine the 1st and 2nd terms of the pattern.<br />
Describe your strategy and show your work.<br />
➤ Choose a different rational number and a different 1st term.<br />
Calculate the first 5 terms of your pattern.<br />
Reflect<br />
Share &<br />
Trade patterns with another pair of classmates.<br />
Write the pattern rule and determine the next 3 terms<br />
in your classmates’ pattern.<br />
How did you use what you know about rational numbers<br />
to identify and extend the pattern?<br />
130 UNIT 3: <strong>Rational</strong> <strong>Number</strong>s
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