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Topic E m ultiplying decimals

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Topic E m ultiplying decimals. STANDARD - 5.NBT.2, 5.NBT.3, 5.NBT.7. Grade 5 Module 1 Lesson 11. Objective:

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slide1
Topic E

multiplying decimals

STANDARD - 5.NBT.2, 5.NBT.3, 5.NBT.7

slide2
Grade 5

Module 1 Lesson 11

Objective:

Multiply a decimal fraction by single-digit whole 
numbers, relate to a written method through 
application of the area and place value 
understanding, and explain the reasoning used.

slide3
MATERIALS NEEDED

FOR THIS LESSON

Student

Student Pages

Problem Set

Exit Ticket

Homework

Place Value Chart

Personal White Boards

Teacher

Teacher Pages

slide5
Take Out the Unit

4 minutes

5.NBT.1

1.234 = _________ thousandths

Say the number: 65.247

76.358 = 7 tens _____ thousandths

slide6
76.358 = 736 tenths _________ thousandths

76.358 = _________ hundredths 8 thousandths

slide7
Add and Subtract Decimals

6 minutes

5.NBT.7

7258 thousandths + 1 thousandth =

7 ones 258 thousandths + 3 hundredths =

7258 thousandths + 1 thousandth =

slide8
7 ones 258 thousandths + 4 tenths =

6 ones 435 thousandths + 4 hundredth =

slide9
2 ones 37 thousandths + 5 tenths =

6 ones 35 hundredths + 7 thousandths =

slide10
4 ones 8 hundredths - 2 ones =

___ ones ___ hundredths

9 tenths - 7 thousandths - 4 thousandths =

slide11
4 ones 582 thousandths - 3 hundredths =

9 ones 708 thousandths - 4 tenths =

slide13
Application Problem (5 minutes)

After school, Marcus ran 3.2km and Cindy ran 
1.95km. Who ran farther? How much farther?

slide15
Problem 1

Multiplying decimals

3 x 0.2

ones

tenths

slide16
Problem 2

Multiplying decimals

3 x 0.3

ones

tenths

slide17
Problem 3

Multiplying decimals

4 x 0.3

ones

tenths

slide18
Problem 4

Multiplying decimals

2 x 0.43

ones

tenths

hundredths

4 tenths + 3 hundredths

2

0.8 + 0.06 = 0.86

slide19
Problem 5

Multiplying decimals

ones

tenths

hundredths

thousandths

2 x 0.423

4 tenths + 2 hundredths + 3 thousandths

4 hundredths

2

8 tenths

6 thousandths

1.2 + 0.04 + 0.006 = 0.846

slide20
Problem 6

Multiplying decimals

ones

tenths

hundredths

thousandths

4 x 0.423

4 tenths + 2 hundredths + 3 thousandths

8 hundredths

4

16 tenths

12 thousandths

1.6 + 0.08 + 0.012 = 1.692

slide21
Problem 7

Multiplying decimals

6 x 1.21

1 one + 2 tenths + 1 hundredth

6

6 ones

6 hundredths

12 tenths

6 + 1.2 + 0.06 = 7.26

slide22
Problem 7

Multiplying decimals

7 x 2.41

2 one + 4 tenths + 1 hundredth

7

14 ones

7 hundredths

28 tenths

14 + 2.8 + 0.07 = 16.87

slide23
Problem 7

Multiplying decimals

8 x 2.34

2 one + 3 tenths + 4 hundredth

8

16 ones

32 hundredths

24 tenths

16 + 2.4 + 0.32 = 18.72

slide24
Problem Set (10 minutes)

Do Your Personal Best

(Complete independently!)

slide25
Student Debrief (10 minutes)

Compare #1c and 1d.

#3 students share work and articulate which 
units are being multiplied and composed 
into larger ones.

slide26
EXIT TICKET (3 minutes)

Complete the exit ticket and turn in...

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