Page ?? #?-?? ANSWERS Student Learning Goal Chart Lesson Reflections.
Page 104 #11-24 ANSWERS Student Learning Goal Chart Lesson Reflections.
-
Upload
matthew-morris -
Category
Documents
-
view
225 -
download
2
Transcript of Page 104 #11-24 ANSWERS Student Learning Goal Chart Lesson Reflections.
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)
Today’s Learning Goal Assignment
Learn to multiply and divide decimals by powers of ten and to convert metric measurements.
Course 1
3-4 Decimals and Metric Measurement
BrainPOP
Metric Measurement
http://www.brainpop.com/science/scientificinquiry/metricunits/
Watch and Complete the Printed Test, turn into your teacher when you are done.
3-4 Decimals and Metric Measurement
Course 1
Warm UpWarm Up
Lesson PresentationLesson Presentation
Problem of the DayProblem of the Day
Warm UpMultiply.
84
87.2
4.2
Course 1
3-4 Decimals and Metric Measurement
73,200
920
1. 8.4 10
2. 8.72 10
3. 0.42 10
4. 732 100
5. 9.2 100
Problem of the Day
A nurse must administer a 4 mL dose of a drug daily to a patient. If there is one liter of this drug on hand, will it last the patient 150 days? If so, how much will remain? If not, how much more will be needed?
0.4L will remain.
Course 1
3-4 Decimals and Metric Measurement
Today’s Learning Goal Assignment
Learn to multiply and divide decimals by powers of ten and to convert metric measurements.
Course 1
3-4 Decimals and Metric Measurement
Course 1
3-4 Decimals and Metric Measurement
Additional Example 1A: Multiplying and Dividing by Powers of Ten
Multiply.
A. 7,126 1,000
7,126.000
= 7,126,000
There are 3 zeros in 1,000. To multiply, move the decimal point 3 places right.
Write 3 placeholder zeros.
Course 1
3-4 Decimals and Metric Measurement
Additional Example 1B & 1C: Multiplying and Dividing by Powers of Ten
Divide.
B. 7,126 ÷ 1,000
C. 46.34 ÷ 104
7,126.
= 7.126
There are 3 zeros in 1,000. To divide, move the decimal point 3 places left.
0046.34
= 0.004634
The power of 10 is 4. Move the decimal point 4 places left. Write placeholder zeros.
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 1A
Multiply.
A. 4,639 1,000
4,639.000
= 4,639,000
There are 3 zeros in 1,000. To multiply, move the decimal point 3 places right.
Write 3 placeholder zeros.
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 1B & 1C
Divide.
B. 4,639 ÷ 1,000
C. 32.08 ÷ 104
4,639.
= 4.639
There are 3 zeros in 1,000. To divide, move the decimal point 3 places left.
0032.08
= 0.003208
The power of 10 is 4. Move the decimal point 4 places left. Write placeholder zeros.
Course 1
3-4 Decimals and Metric Measurement
Unit AbbreviationApproximate Comparison
Length
Kilometer kmLength of 10 football fields
Meter m Width of a door
Centimeter
cmWidth of your little finger
Millimeter mmThickness of a dime
Course 1
3-4 Decimals and Metric Measurement
Unit AbbreviationApproximate Comparison
MassKilogram kg
Mass of a textbook
Gram gMass of a small paperclip
Course 1
3-4 Decimals and Metric Measurement
Unit AbbreviationApproximate Comparison
CapacityLiter L
Filled bottle of sparkling water
Milliliter mLHalf-filled eyedropper
Course 1
3-4 Decimals and Metric Measurement
Additional Example 2A & 2B: Choosing Appropriate Units
Use the abbreviation for the most appropriate metric unit.
A. A soda can is about 12 ____ tall.
B. The mass of a pen is about 5 ____.
A soda can is about 12 cm tall.
Think: A soda can is about the height of 12 little-finger widths.
?
The mass of a pen is about 5 g.
Think: A pen has a mass of about 5 small paper clips.
?
Course 1
3-4 Decimals and Metric Measurement
Additional Example 2C: Choosing Appropriate Units
Use the abbreviation for the most appropriate metric unit.
C. A sip of water is about 3 ____.?
A sip of water is about 3 mL.
Think: A sip of water is about 3 half-filled eyedroppers.
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 2A & 2B
Use the abbreviation for the most appropriate metric unit.
A. A one-car garage door is about 4 ____ wide.
B. The mass of an eraser is about 7 ____.
A garage door is about 4 m wide.
Think: A garage door is about the width of 4 door widths.
?
The mass of an eraser is about 7 g.
Think: An eraser has a mass of about 7 small paper clips.
?
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 2C
Use the abbreviation for the most appropriate metric unit.
C. A telephone directory weighs about 3 ____.?
A telephone directory weighs about 3 kg .
Think: A telephone directory is about 3 textbooks.
Course 1
3-4 Decimals and Metric Measurement
1,000 100 10 1 0.1 0.01 0.001
Thousands Hundreds Tens Ones Tenths Hundredths Thousandths
Kilo- Hecto- Deca-Base unit
Deci- Centi- Milli-
In the metric system, each unit of measure is ten times greater than the unit to its right in a place-value chart.
To convert units within the metric system, multiply or divide by powers of ten.
Course 1
3-4 Decimals and Metric Measurement
Additional Example 3A: Converting Within the Metric System
Convert each measure.
A. The height of a door is about 2 m. 2 m = ___ km
2 m = (2 ÷ 1000)km 1 km = 1,000 m, so divide by 1,000.
?
2 m = 0.002 km Move the decimal point 3 places left.
To convert to smaller units, multiply.
To convert to larger units, divide.
Helpful Hint
Course 1
3-4 Decimals and Metric Measurement
Additional Example 3B: Converting Within the Metric System
Convert the measure.
B. The width of a door is about 0.85 m. 0.85 m = ___ cm?
0.85 m = (0.85 100)cm1 m = 100 cm, so multiply by 100.
0.85 m = 85 cm Move the decimal point 2 places right.
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 3A
Convert each measure.
A. The height of a building is about 30 m. 30 m = ___ km
30 m = (30 ÷ 1000)km 1 km = 1,000 m, so divide by 1,000.
?
30 m = 0.03 km Move the decimal point 3 places left.
Course 1
3-4 Decimals and Metric Measurement
Try This: Example 3B
Convert the measure.
B. The width of a chair is about 0.98 m. 0.98 m = ___ cm?
0.98 m = (0.98 100)cm1 m = 100 cm, so multiply by 100.
0.98 m = 98 cm Move the decimal point 2 places right.
Lesson Quiz: Part 1
7.157311,604
Insert Lesson Title Here
m
cm
Course 1
3-4 Decimals and Metric Measurement
Multiply or divide.
1. 16.04 102 2. 715.731 ÷ 100
Use the abbreviation for the most appropriate
metric unit.
3. The length of a soccer field is about 100 ___.
4. The width of a computer screen is about 23 ___.
?
?