Warm Up - WordPress.com · 9/10/2014 · 1. Is 3 red marbles : 15 green marbles proportional to 9...
Transcript of Warm Up - WordPress.com · 9/10/2014 · 1. Is 3 red marbles : 15 green marbles proportional to 9...
Warm Up1. Is 3 red marbles : 15 green marbles proportional to 9 red marbles : 45 green marbles? Prove with math.
2. Write 38 mile to 4 hours as a unit rate.
3. Find the simple interest earned on $50 invested for 8 years at 4%.
4. Write the temperatures in order of least warm to most warm: 2, 14, 19, 0, 5, 7, 25
5. Write 31,090,000,000 in scientific notation?
6. Find the balance on $600 compounded annually at a rate of 4% for 15 years?
Wobble Chairs: Bauer, Abby, Jenna
Content Objective• I can plot rational numbers and their opposites on a number line. • I can solve problems using absolute values.
Language Objective• I can describe what absolute value means.
Assignment 3.1ADue__________
Lesson 3.1A
Planner
7.1.2.6
7.1.2.6
7.1.1.3
Lesson 3.1 A Negative NumbersI can plot rational numbers and their opposites on a number line. 7.1.1.3I can describe what absolute value means. 7.1.2.6I can solve problems using absolute values. 7.1.2.6
Emma Nena Tyler$200 $0 $400
Whose in 1st place?_______________2nd?___________________________3rd?___________________________Why? How do you know?
Kelton Joe Edward $11,200 $6,000 $89,400
Kristin Brad Stephanie $8,400 $200 $4,800
Rani Kellie Evan $1,400 $1,000 $200
Whose in 1st place?_______________2nd?___________________________3rd?___________________________Why? How do you know?
Whose in 1st place?_______________2nd?___________________________3rd?___________________________Why? How do you know?
Whose in 1st place?_______________2nd?___________________________3rd?___________________________Why? How do you know?
RealLife MathSoaring to New Heights How high is the highest mountain? How deep is the deepest part of the ocean? How are height and depth measured?We call height and depth elevation. We measure elevation from sea level, the average level of the ocean. Parts of the world that are at sea level have an elevation of 0. Denver, the "milehigh" city is approximately one mile above sea level. That means Denver's elevation is approximately one mile. Denver, the "milehigh" city is approximately one mile above sea level. That means Denver's elevation is approximately one mile. Death Valley is 282 feet below sea level. We say that its elevation is 282 feet.
Think About It If the Dead Sea is 30,324 feet less than Mt. Everest's elevation which is 29,029 feet above sea level, is the Dead Sea below sea level?
You have probably seen negative numbers used in many situations. Below par golf scores, elevations below sea level, temperatures below 0o, and balances of overdrawn bank accounts can all be described with negative numbers. Zoe and Darnell have different ways of thinking about negative numbers.
Darnell used positive numbers when he thought about negative numbers. Use Darnell's method to solve the following problems. Express each number using the fewest negative signs possible.
(2) = _________
(((8))) = _________
([([(7)])]) = _________
____ ____ ____ ____ ____ ____ ____ 10 2 3 4 5 6 7 8 9 1012345678910
Place the following numbers on the number line. Be sure to label your points. Then use the number line to order the numbers from least to greatest.
4 5 0 3.5 4.2 0.25 1.75
To show the absolute value of a number, draw a vertical line on each side of the number.
|4| = 4( |4| is asking how far is 4 from zero?)
|4| = 4
( |4| is asking how far is 4 from zero?)
Remember, absolute value is asking for a distance, and distances are positive.
Zoe also used positive numbers when she thought about negative numbers. Zoe actually used the absolute value of 4. Since 4 and 4 are both four units from 0, both have absolute value 4.
Find each answer.
6 = ________ 6 = ________
6 = ________ 6 = ________
14 = ________ 14 = _______
Tricky questions...
The absolute value of 12 is the_______________between _____ and _____.
The absolute value of 17 is the_________________between _____ and _____.
14 = ________ 14 = ________
https://www.youtube.com/watch?v=ApkvLqzj3eU
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