Transcript 2 minutes

Topic D
adding and subtracting decimals
STANDARD - 5.NBT.2, 5.NBT.3, 5.NBT.7
Grade 5
Module 1 Lesson 9
Objective:
Add decimals using place value
strategies
and relate those strategies to a written
method.
MATERIALS NEEDED
FOR THIS LESSON
Student
Student Pages
Personal White Boards
place value disks
Sprint A & B
Problem Set
Exit Ticket
Homework
Teacher
Teacher Pages
Fluency Practice (14 minutes)
Round to the Nearest One
8 minutes
5.NBT.4
1 minutes
Do as many problems as you can.
Do your personal best.
Take your mark!
Get set!
THINK!
Round to the Nearest One
5.NBT.4
1 minutes
Do as many problems as you can.
Do your personal best.
Take your mark!
Get set!
THINK!
Decompose the Unit
5.NBT.1
6.358
Say the number
How many tenths?
_____ tenths _____ hundredths
2 minutes
7.354
Say the number
How many tenths?
_____ tenths _____ hundredths
Round to Different Place Vlaues
5.NBT.4
2.475
Say the number?
Round to the nearest tenth
Round to the nearest hundredth
2 minutes
2.987
Say the number?
Round to the nearest tenth
Round to the nearest hundredth
One Unit More
5.NBT.7
Say the decimal that's one tenth more ..
5 tenths
5 hundredths
5 thousandths
2 minutes
Say the decimal that's one tenth more ..
8 hundredths
3 tenths
2 thousandths
What is one more thousandth
0.052
What is one more tenth more than
35
hundredths
What is 1 thousandth more than
35
hundredths
What is one hundredths more than
438
thousandths
Application Problem
(5 minutes)
Ten baseballs weigh 1,417.4 grams. About how much does 1
baseball weigh? Round your answer to the nearest tenth of a
gram. Round to the nearest gram. If someone asked you, "About
how much does a baseball weigh?" which anser would you
give? Why?
Concept Development (31 minutes)
Problem 1
adding decimals
2 tenths + 6 tenths
ones
tenths
hundredths
thousandths
Problem 2
adding decimals
2 ones 3 thousandths + 6 ones 1 thousandths
ones
tenths
hundredths
thousandths
Problem 3
adding decimals
2 tenths 5 thousandths + 6 hundredths
ones
tenths
hundredths
thousandths
Problem 4
adding decimals
1.8 + 3 tenths
ones
tenths
hundredths
thousandths
Problem 5
adding decimals
1 hundred 8 hundredths + 2 ones 4 hundredths
hundreds
tens
ones
tenths
hundredths
thousandths
Problem 6
adding decimals
148 thousandths + 7 ones 13 thousandths
hundreds
tens
ones
tenths
hundredths
thousandths
Problem 7
adding decimals
0.74 + 0.59
hundreds
tens
ones
tenths
hundredths
thousandths
Problem 8
adding decimals
7.048 + 5.196
hundreds
tens
ones
tenths
hundredths
thousandths
Problem 9
adding decimals
7.44 + 0.774
hundreds
tens
ones
tenths
hundredths
thousandths
Problem Set (10 minutes)
Do Your Personal Best
(Complete independently!)
Student Debrief (10 minutes)
How is adding decimal fractions the same as adding whole
numbers? How is it different
What are some different words you have used through the grades for
changing 10 smaller units for 1 of the next larger units or changing 1 unit
for 10 of the next smaller units?
What do you notice about the addends in letters b,d and f in #1? Explain
the thought process in solving these problems.
EXIT TICKET (3 minutes)
Complete the exit ticket and turn in...
HOMEWORK