Math 8/30/2010-9/3/2010 • Understand place value from hundredths to one million • Model and explain multiplication and division of decimals • Multiply and divide decimals • Understand the rules for multiplication and division of decimals • Use formulas to represent the relationship between quantities • Use variables for unknown quantities
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Math 8/30/2010-9/3/2010 Understand place value from hundredths to one million Model and explain multiplication and division of decimals Multiply and divide.
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Math 8/30/2010-9/3/2010
•Understand place value from hundredths to one million•Model and explain multiplication and division of decimals
•Multiply and divide decimals•Understand the rules for multiplication and division of decimals•Use formulas to represent the relationship between quantities
•Use variables for unknown quantities
Monday 8/30/2010 M5N2 b. Analyze the effect on the product when a number is multiplied by 10, 100, 1000, 0.1, and 0.01.
Try this….1. Pick any decimal as your number, for
example 12.3.
2. Multiply that number by 1000, 100, 10, 0.1, and 0.01.
3. What is happening?
4. Is there a pattern?
5. What do you think would happen if you multiplied your number by 1,000,000? 0.00001?
Task: Cut these strips out.
Performance Task
All of these Symbols mean to MULTIPLY:
×.*7(5) =7x5
Preview of Multiplication Modeling
Problem Solving: Your ticket out of the door
Read the problem.
What is your strategy?
What operation(s) will you use to solve the problem?
Write your answer and explain it.
HOMEWORK:
Homework book: Lesson 13.5: 1-8
Study your 8’s (Jingle Bells)
Tuesday 8-31-10Model multiplication and division of decimals.
Explain the process of multiplication and division, including situations in which the multiplier and divisor are both whole numbers and decimals. Multiply and divide with decimals including decimals less than one and greater than one.
Understand the relationships and rules for multiplication and division of whole numbers also apply to decimals
Dividend: A number that is divided by another number.
Divisor:
A number by which another number is to be divided.
Quotient: A number that is the result of division (without remainders)
Division: An operation in which a number is shared or grouped into equal parts.
TASK: On construction paper, write out and solve this problem:
Label the Dividend, Divisor, and Quotient.
All of these symbols mean to DIVIDE
All fractions are division problems. The top number is divided by the bottom number. This is also how we find a percent.