7th Grade Math

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7th Grade Math

• Week of 9/15/14
• Information from http//net.cmsdnet.net/schools/
  math/sld005.htm
• http//www.mathsisfun.com/adding-decimals.html

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Monday Bell Work

• 7t 2 16
• 25 7h 3
• Solve the equations

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19. Difference
This word actually means.. the result when 2
numbers are subtracted.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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20. Factor
This word actually means.. a number that is
multiplied by another number to get a product.
What does this word mean to you?
Explain how you would use this word in math.
Examples
5
2- Step Equation

• ... use patterns and properties to explore,
  develop properties and describe real-world
  situations represented by the multiplication or
  division of integers? (7.NS.2a)

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Properties foldable

• 1 piece of paper needed!!

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Foldable
Cut this section off
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Foldable
Fold in 1/2
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Foldable
Cut 3 lines to make 4 flaps
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Foldable
Commutative
Associative
Identity
Distributive
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Identity Property
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Commutative
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Distributive
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Associative
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HW

• Worksheet
• Identify the property being shown

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Exit / Closure

• How do inverse operations have an impact upon
  equations?

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Tuesday Bell Work

• 1) a 5 8
• 4
• 2)
• Solve the equations
• Have homework on desk ready to check

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21. Equivalent
This word actually means.. having the same value.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• ... solve real-world problems involving the
  addition, subtraction, multiplication, and/or
  division of rational numbers? (7.NS.3)

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Adding Decimals
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Subtracting Decimals
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Exit / Closure

• In math, what is the definition of additive
  inverse. When do you see additive inverse being
  used?

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Wednesday Bell Work

• Danielle spent 35 on a magazine and some
  notepads. If the magazine cost 3 and each
  notepad cost 4 then how many notepads did she
  buy?
• Write and solve the 2-step equation. The
  variable cannot be in the answer.

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22. Inequality
This word actually means.. two values or
quantities that are not equal.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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• How to Multiply Decimals
• Just follow these steps
• Multiply normally, ignoring the decimal points.
• Then put the decimal point in the answer - it
  will have as many decimal places as the two
  original numbers combined.

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Lesson

• ... solve real-world problems involving the
  addition, subtraction, multiplication, and/or
  division of rational numbers? (7.NS.3)

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Exit / Closure

• Why is it important to line the decimals up with
  adding or subtracting? How does this relate to
  your knowledge of place value?

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Thursday Bell Work

• 1) Jamie had 20 to spend on seven raffle
• tickets. After buying them she had 6. How
• much did each raffle ticket cost?
• Write and solve the 2-step equation. The
  variable cannot be in the answer.

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23. Contextual
This word actually means.. using words to
explain the meaning of a statement.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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24. Compare
This word actually means.. measure the
similarities and/or differences between
quantities.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• ... solve real-world problems involving the
  addition, subtraction, multiplication, and/or
  division of rational numbers? (7.NS.3)
• N2K 3

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• Critical Thinking Activity
• 5. Select the most accurate decimal form for the
  fraction 2/9.
• _
• A) 0.2
• B) 2.9
• C) 0.2
• D) 4.5
• WB p. 102

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• Constructed Response
• 5. Arianne was given the fraction 13/8 and was
  told to convert it into its decimal form. Her
  work is below
• ___.1625___
• 8 ) 13
• -8
• 5 0
• -48
• 2 0
• -16
• 4 0
• -40
• 0
• She got the decimal 0.1625 for the decimal. Is
  she correct? Use estimation to justify your
  answer.

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Exit / Closure

• What is the importance of checking your work in
  math?
• Discuss with a partner

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Friday Bell Work

• Ashley spent half of her weekly allowance
• playing mini-golf. To earn more money her
• parents let her wash the car for 9. What is
• her weekly allowance if she ended with
• 15?
• Write and solve a 2-step equation.
• notes for Agenda
• Word Wall Vocabulary Quiz Monday 9/22
• Benchmark Monday 9/29
• Ch 3 Test Friday 10/3

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25. Convert
This word actually means.. to express a value in
another form.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• ... solve real-world problems involving the
  addition, subtraction, multiplication, and/or
  division of rational numbers? (7.NS.3)

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Dividing Decimals

• Dividing a Decimal Number by a Whole Number
• To divide a decimal number by a whole number
• Use Division or Long Division (ignoring the
  decimal point)
• Then put the decimal point in the same spot as
  the dividend (the number being divided)

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• Dividing by a Decimal Number
• But what if we want to divide by a Decimal
  Number?
• The trick is to change the number we are dividing
  by to a whole number first, by shifting the
  decimal point of both numbers to the right
• Now we are dividing by a whole number, and can
  continue as normal.
• It is safe to do this if we remember to shift the
  decimal point of both numbers the same number of
  places.

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Exit / Closure

• Tommy said that 4 2 x -24 x is 14.
• Justify whether Tommy is incorrect or correct.
• Be ready to explain your answer to a partner.