HW: Page 129 #9-20 ANSWERS

Student Progress Chart Lesson Reflection 3-8

Math Learning Goal Students will understand decimals.

Today’s Learning Goal Assignment Learn to solve problems by interpreting the quotient. Course Interpret the Quotient

Students will understand decimals by being able to do the following: Learn to write, compare, and order decimals using place value and number lines (3-1) Learn to estimate decimal sums, differences, products, and quotients (3-2) Learn to add and subtract decimals (3-3) Learn to multiply and divide decimals by powers of ten and to convert metric measurements (3-4) Learn to write large numbers in scientific notation (3-5) Learn to multiply decimals by whole numbers and by decimals (3-6) Learn to divide decimals by whole numbers (3-7) Learn to divide whole numbers and decimals by decimals (3-8) Learn to solve problems by interpreting the quotient (3-9)

6 th Grade Math HW Page 132 & 133 #1-6 all Course Interpret the Quotient

3-9 Interpret the Quotient Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day

Warm Up Divide ÷ ÷ ÷ ÷ Course Interpret the Quotient 5.9

Problem of the Day Divide your age in months by 12. What does the quotient tell you? my age in years Course Interpret the Quotient

Today’s Learning Goal Assignment Learn to solve problems by interpreting the quotient. Course Interpret the Quotient

Course Interpret the Quotient To divide decimals, first write the divisor as a whole number. Multiply the divisor and dividend by the same power of ten. Remember!

Course Interpret the Quotient Additional Example 1: Measurement Application Suppose Mark wants to make bags of slime. If each bag of slime requires 0.15 kg of corn starch and he has 1.23 kg, how many bags of slime can he make? The question asks how many whole bags of slime can be made when the corn starch is divided into groups of 0.15 kg ÷ 0.15 = ? 1.23 ÷ 0.15 = 8.2 Think: The quotient shows that there is not enough to make 9 bags of slime that are 0.15 kg each. There is only enough for 8 bags. The decimal part of the quotient will not be used in the answer. Mark can make 8 bags of slime.

Course Interpret the Quotient Try This: Example 1 Suppose Antonio wants to make bags of slime. If each bag of slime requires 0.15 kg of corn starch and he has 1.44 kg, how many bags of slime can he make? The question asks how many whole bags of slime can be made when the corn starch is divided into groups of 0.15 kg ÷ 0.15 = ? 1.44 ÷ 0.15 = 9.6 Think: The quotient shows that there is not enough to make 10 bags of slime that are 0.15 kg each. There is only enough for 9 bags. The decimal part of the quotient will not be used in the answer. Antonio can make 9 bags of slime.

Course Interpret the Quotient Additional Example 2: Photography Application There are 237 students in the seventh grade. If Mr. Jones buys rolls of film with 36 exposures each, how many rolls will he need to take every student’s picture? The question asks how many rolls are needed to take a picture of every one of the students. Think: 6 rolls of film will not be enough to take every student’s picture. Mr. Jones will need to buy another roll of film The quotient must be rounded up to the next highest whole number. Mr. Jones will need 7 rolls of film. 237 ÷ 36 = __

Course Interpret the Quotient Try This: Example 2 There are 342 students in the seventh grade. If Ms. Tia buys rolls of film with 24 exposures each, how many rolls will she need to take every student’s picture? The question asks how many rolls are needed to take a picture of every one of the students. Think: 14 rolls of film will not be enough to take every student’s picture. Ms. Tia will need to buy another roll of film. The quotient must be rounded up to the next highest whole number. Ms. Tia will need 15 rolls of film. 342 ÷ 24 = 14.25

Course Interpret the Quotient Additional Example 3: Social Studies Application Gary has meters of rope. If he cuts it into 13 equal pieces, how long is each piece? The question asks how long each piece will be when the rope is cut into 13 pieces. Think: The question asks for an exact answer, so do not estimate. Use the entire quotient. Each piece will be 3.25 meters long ÷ 13 = 3.25

Course Interpret the Quotient Try This: Example 3 Ethan has meters of rope. If he cuts it into 15 equal pieces, how long is each piece? The question asks how long each piece will be when the rope is cut into 15 pieces. Think: The question asks for an exact answer, so do not estimate. Use the entire quotient. Each piece will be 4.28 meters long ÷ 15 = 4.28

Course Interpret the Quotient When the question asks You should How many whole groups can be made when you divide? Drop the decimal part of the quotient. How many whole groups are needed to put all items from the dividend into a group? Round the quotient up to the next highest whole number. What is the exact number when you divide? Use the entire quotient as the answer.

Lesson Quiz Solve. 1. The cross-country team’s goal is to run mi next week. If they run only 5 days next week, how many miles would they have to run each day? 2. Shannon is having a surprise party for her parents. She wants to invite 22 friends. Invitations come in packages of 8. How many packages does Shannon need to buy? mi Insert Lesson Title Here Course Interpret the Quotient