Grade 5 Module 1 Lesson 15
Sprint Multiply by Exponents
Find the Quotient 0.48 ÷ 2 ___ (On your place value chart, draw 48 hundredths in number disks.)
Find the Quotient 0.48 ÷ 2 ___ 48 hundredths ÷ 2 = ___ hundredths
Find the Quotient 0.48 ÷ 2 ___ 48 hundredths ÷ 2 = 24 hundredths = ____ tenths ____ hundredths
Find the Quotient 0.48 ÷ 2 ___ 48 hundredths ÷ 2 = 24 hundredths = 2 tenths 4 hundredths Now solve using the standard algorithm
Find the Quotient 0.42 ÷ 3 ___ (On your place value chart, draw 42 hundredths in number disks.)
Find the Quotient 0.42 ÷ 3 ___ 42 hundredths ÷ 3 = ___ hundredths
Find the Quotient 0.42 ÷ 3 ___ 42 hundredths ÷ 3 = 14 hundredths = ___ tenths ___ hundredths
Find the Quotient 0.42 ÷ 3 ___ 42 hundredths ÷ 3 = 14 hundredths = 1 tenth 4 hundredths
Find the Quotient 0.42 ÷ 3 ___ 42 hundredths ÷ 3 = 14 hundredths = 1 tenth 4 hundredths Now solve using the standard algorithm.
Application Problem Jose bought a bag of 6 oranges for $2.82. He also bought 5 pineapples. He gave the cashier $20 and received $1.43 change. What did each pineapple cost?
Application Problem = $20 Jose bought a bag of 6 oranges for $2.82. He also bought 5 pineapples. He gave the cashier $20 and received $1.43 change. What did each pineapple cost? $2.82 ? $1.43 = $20 Oranges 5 pineapples Change
Application Problem = $20 $20 - $2.82 - $1.43 = Pineapples Jose bought a bag of 6 oranges for $2.82. He also bought 5 pineapples. He gave the cashier $20 and received $1.43 change. What did each pineapple cost? $2.82 ? $1.43 = $20 Oranges 5 pineapples Change $20 - $2.82 - $1.43 = Pineapples
Application Problem = $20 $20 - $2.82 - $1.43 = $15.75 Jose bought a bag of 6 oranges for $2.82. He also bought 5 pineapples. He gave the cashier $20 and received $1.43 change. What did each pineapple cost? $2.82 ? $1.43 = $20 Oranges 5 pineapples Change $20 - $2.82 - $1.43 = $15.75
Application Problem ? = $15.75
Application Problem ? = $15.75 $15.75 ÷ 5 =
Application Problem ? = $15.75 $15.75 ÷ 5 = $3.15 for each pineapple
Concept Development 1.7 ÷ 2 Show 1.7 on your place value chart by drawing number disks.
Concept Development 1.7 ÷ 2 Show 1.7 on your place value chart by drawing number disks. Let’s begin with our largest units. Can 1 one be divided into 2 groups?
Concept Development 1.7 ÷ 2 Show 1.7 on your place value chart by drawing number disks. Let’s begin with our largest units. Can 1 one be divided into 2 groups? No Each group gets how many ones?
Concept Development 1.7 ÷ 2 Show 1.7 on your place value chart by drawing number disks. Let’s begin with our largest units. Can 1 one be divided into 2 groups? No Each group gets how many ones? Zero ones
Concept Development 1.7 ÷ 2 Unbundle it or exchange it for 10 tenths. Draw that unbundling and tell me how many tenths we have now.
Concept Development 1.7 ÷ 2 Unbundle it or exchange it for 10 tenths. Draw that unbundling and tell me how many tenths we have now. 17 tenths
Concept Development 1.7 ÷ 2 Unbundle it or exchange it for 10 tenths. Draw that unbundling and tell me how many tenths we have now. 17 tenths 17 tenths divided by 2. How many tenths can we put in each group?
Concept Development 1.7 ÷ 2 Unbundle it or exchange it for 10 tenths. Draw that unbundling and tell me how many tenths we have now. 17 tenths 17 tenths divided by 2. How many tenths can we put in each group? 8 tenths
Concept Development 1.7 ÷ 2 Cross then off as you divide them into our 2 equal groups. How many tenths did we share in all?
Concept Development 1.7 ÷ 2 Cross then off as you divide them into our 2 equal groups. How many tenths did we share in all? 16 tenths Explain to your partner why we are subtracting the 16 tenths.
Concept Development 1.7 ÷ 2 Cross then off as you divide them into our 2 equal groups. How many tenths did we share in all? 16 tenths Explain to your partner why we are subtracting the 16 tenths. How many tenths are left?
Concept Development 1.7 ÷ 2 Cross then off as you divide them into our 2 equal groups. How many tenths did we share in all? 16 tenths Explain to your partner why we are subtracting the 16 tenths. How many tenths are left? 1 tenth
Concept Development 1.7 ÷ 2 Is there a way for us to keep sharing? Turn and talk
Concept Development 1.7 ÷ 2 Is there a way for us to keep sharing? Turn and talk. You unbundle the 1 tenth to make 10 hundredths. Now that we have 10 hundredths, can we divide this between our 2 groups? How many hundredths are in each group?
Concept Development 1.7 ÷ 2 Now that we have 10 hundredths, can we divide this between our 2 groups? How many hundredths are in each group? Let’s cross them off as you divide them into 2 equal groups. How many hundredths did we share in all?
Concept Development 1.7 ÷ 2 Now that we have 10 hundredths, can we divide this between our 2 groups? How many hundredths are in each group? Let’s cross them off as you divide them into 2 equal groups. How many hundredths did we share in all? 10 hundredths How many hundredths are left?
Concept Development 1.7 ÷ 2 Now that we have 10 hundredths, can we divide this between our 2 groups? How many hundredths are in each group? Let’s cross them off as you divide them into 2 equal groups. How many hundredths did we share in all? 10 hundredths How many hundredths are left? Zero hundredths
Concept Development 1.7 ÷ 2 Do we have any other units that we need to share?
Concept Development 1.7 ÷ 2 Do we have any other units that we need to share? No Tell me the quotient in unit form and in standard form.
Concept Development 1.7 ÷ 2 Do we have any other units that we need to share? No Tell me the quotient in unit form and in standard form. 0 ones 8 tenths 5 hundredths; 85 hundredths;0.85
Concept Development 2.6 ÷ 4
Concept Development 17 ÷ 4
Concept Development 22 ÷ 8
Concept Development 7.7 ÷ 4
Concept Development 0.84 ÷ 4
Problem Set Do your personal best to complete the problem set.
Lesson Objective Divide decimals using place value understanding, including remainders in the smallest unit.
Lesson Objective Which division strategy do you find more efficient? Drawing number disks or the algorithm?
Lesson Objective Will a whole number divided by a whole number always result in a whole number?