DO NOW Compare: 3/5 ____ 0.77 6/7 ____ 2/3 15/20 ____ 0.2345

DO NOWCompare:

•3/5 ____ 0.77

•6/7 ____ 2/3

•15/20 ____ 0.2345

Physical Activity• Grab one sheet of paper and put your

name on the top• When I say “go,” get up and go to a green

fraction hanging on the wall. • You will convert the fraction in green to a

decimal. Then, you will find your answer (in red) located around the room. Go to the problem where your answer is located. Convert the fraction in green, and then go find your answer in red. Repeat.

And the winner is….

• Getting one extra credit point on their quiz!

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Vocabulary• Expression

Insert Lesson Title HereVocabulary

• Order of Operations– Take one minute to write down your steps for

getting ready for school in the morning or going to bed at night.

• Definition: the order in which operations should be done

Course 2

When simplifying a numerical expression, rules must be followed so that everyone gets the same answer. That is why mathematicians have agreed upon the order of operations.

ORDER OF OPERATIONS

1. P Perform operations within grouping symbols.

2. E Evaluate powers.

3. MD Multiply and divide in order from left to right.

4. AS Add and subtract in order from left to right.

PEMDAS

Evaluate

3 + 15 ÷ 5

3 + 15 ÷ 5

3 + 3

6

Divide.

Add.

PEMDAS

Evaluate.

Course 2

44 – 14 ÷ 2 · 4 + 6

44 – 14 ÷ 2 · 4 + 6

44 – 7 · 4 + 6

44 – 28 + 6

16 + 6

22

Divide and multiply fromleft to right.

Subtract and add fromleft to right.

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Course 2

YOU TRY

Evaluate.

A. 2 + 24 ÷ 6

2 + 24 ÷ 6

2 + 4

6

Divide.

Add.

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Course 2

Evaluate.

28 – 21 ÷ 3 · 4 + 5

28 – 21 ÷ 3 · 4 + 5

28 – 7 · 4 + 5

28 – 28 + 5

0 + 5

5

Divide and multiply fromleft to right.

Subtract and add fromleft to right.

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Course 2

WITH WORDS

Jill is learning vocabulary words for a test. From the list, she already knew 30 words. She is learning 4 new words a day for 3 days each week. Evaluate the expression 3 · 4 · 7 + 30 to find out how many words will she know at the end of seven weeks?

Day Words

Initially 30

Day 1 4

Day 2 4

Day 3 4

3 · 4 · 7 + 30

12 · 7 + 30

84 + 30

114

Multiply.

Jill will know 114 words from the list at the end of 7 weeks.

Evaluate.

Denzel paid a basic fee of $35 per month plus $2

for each phone call beyond his basic plan.

Evaluate 35 + 8(2) to find out how much

Denzel paid for a month with 8 calls outside of

the basic plan.

$51

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Course 2

YOU TRY

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Course 2

WHITE BOARDS

2 x 18 – 4 x 7

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Course 2

WHITE BOARDS

2 x (18 – 4) x 7

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Course 2

WHITE BOARDS

7(9 – 3) + 2

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Course 2

WHITE BOARDS

-11 – 3 + 7

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Course 2

WHITE BOARDS

15 – (4 x 5)

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Course 2

WHITE BOARDS

3(12−8)-4

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Course 2

EXIT TICKET

1. What is the order of operations for solving numerical expressions with whole numbers?

1. 5(6+2)+52. 23-4(6-1)3. 13 + 5 x 3 – 164. 6 (5-2) -3 x 4