Post on 04-Sep-2020
MATH 8UNIT 1 UNIT REVIEW
YOU HAVE 6 POTTED TOMATO PLANTS THAT YOU
WANT TO DISPLAY IN ORDER FROM SHORTEST TO
TALLEST. WRITE THE HEIGHTS OF THE POTS IN
ORDER FROM SHORTEST TO TALLEST?
𝟏. 𝟖 𝐢𝐧. , 𝟐. 𝟒 𝐢𝐧. , 𝟓 𝐢𝐧. , 𝟐𝟏
𝟑𝐢𝐧. , 𝟐. 𝟓 𝐢𝐧. , 𝟐 𝟐 𝐢𝐧.
YOU HAVE 6 POTTED TOMATO PLANTS THAT YOU
WANT TO DISPLAY IN ORDER FROM SHORTEST TO
TALLEST. WRITE THE HEIGHTS OF THE POTS IN
ORDER FROM SHORTEST TO TALLEST?
𝟏. 𝟖 𝐢𝐧. , 𝟓 𝐢𝐧. , 𝟐𝟏
𝟑𝐢𝐧, 𝟐. 𝟒 𝐢𝐧. , 𝟐. 𝟓 𝐢𝐧. , 𝟐 𝟐 𝐢𝐧.
Water Levels of Texas Lakes
LakeNumber of Feet Above or Below Normal
Level
Conroe -0.40
Lake O’ The Pines .02
Travis -55.94
Possum Kingdom −16.23
Richland Chambers -9.24
Which of the following list the lakes in order from greatest to least based on the number of feet above or below normal levels?
Water Levels of Texas Lakes
LakeNumber of Feet Above or Below Normal
Level
Lake O’ The Pines .02
Conroe -0.40
Richland Chambers -9.24
Possum Kingdom −16.23
Travis -55.94
Which of the following list the lakes in order from greatest to least based on the number of feet above or below normal levels?
5. THE STUDENTS ARE CONDUCTING
EXPERIMENTS AND THE RESULT IS
HOW MUCH THEY HAVE
COMPLETED SO FAR.
6. WHO HAS COMPLETED THE
MOST OF THEIR EXPERIMENT?
7. WHO HAS COMPLETED THE
LEAST?
8. HOW DO YOU KNOW?
WHO HAS COMPLETED THE MOST
OF THEIR EXPERIMENT?
KIM BECAUSE 4/5 = 80%
WHO HAS COMPLETED THE LEAST?
EDUARDO BECAUSE HE HAS
COMPLETED ONLY 60%
HOW DO YOU KNOW?
BECAUSE I KNOW HOW TO
CONVERT AND COMPARE NUMBERS
1
3, −
3
10, 0.305, 31%,
•ORDER THESE NUMBERS FROM GREATEST TO LEAST.
1
3, 31%, 0.305, −
3
10
THESE NUMBERS ARE ORDERED FROM GREATEST TO LEAST.
(CONVERT TO DECIMALS AND COMPARE)
•AN INSPIRATIONAL POST GAME VIDEO WENT VIRAL
ON YOUTUBE AND HAS 8.73 X 106 HITS.
EXPRESS THIS NUMBER IN STANDARD FORM.
•AN INSPIRATIONAL POST GAME VIDEO WENT VIRAL
ON YOUTUBE AND HAS 8.73 X 106 HITS.
EXPRESS THIS NUMBER IN STANDARD FORM.
•8,730,000
•MOVE THE DECIMAL TO THE RIGHT 6 TIMES AND FILL
IN THE EMPTY DECIMAL PLACES WITH ZEROS.
•ONE LIGHT YEAR IS
9,460,528,400,000,000 METERS
•EXPRESS THIS NUMBER IN
SCIENTIFIC NOTATION
•ONE LIGHT YEAR IS
9.4605284 X 1015METERS
EXPRESSED IN SCIENTIFIC
NOTATION
•THE AVERAGE DISTANCE FROM EARTH TO THE
SUN IS ABOUT 9.3 × 107 MILES. THE AVERAGE
DISTANCE FROM MARS TO THE SUN IS ABOUT
1.4 × 108 MILES. WHEN BOTH PLANETS ARE AT
THEIR AVERAGE DISTANCE FROM THE SUN,
HOW MANY TIMES FARTHER IS MARS FROM
THE SUN THAN EARTH?
• THE AVERAGE DISTANCE FROM EARTH TO THE SUN IS ABOUT 9.3 × 107 MILES.
THE AVERAGE DISTANCE FROM MARS TO THE SUN IS ABOUT 1.4 × 108 MILES.
WHEN BOTH PLANETS ARE AT THEIR AVERAGE DISTANCE FROM THE SUN, HOW
MUCH FARTHER IS MARS FROM THE SUN THAN EARTH?
• THINK ABOUT A SIMPLER PROBLEM. HOW MANY TIMES BIGGER IS 15 THAN 5?
ANSWER: 3, BECAUSE 15/5=3.
• THE SAME THINKING IS APPLIED HERE, EXCEPT THE NUMBERS ARE IN SCIENTIFIC
NOTATION. IT IS STILL A DIVISION PROBLEM.
• ANSWER: APPROXIMATELY 1.5 TIMES FARTHER.
65 36• COMPARE AND CONTRAST:
• LABEL THE NUMBER RATIONAL OR IRRATIONAL AND WRITE AN EXPLANATION OF HOW YOU
KNOW.
65 3665 IS IRRATIONAL. IT IS THE SQUARE ROOT 36 IS RATIONAL. IT EQUALS 6, WHICH IS
OF AN IMPERFECT SQUARE. THE DECIMAL A WHOLE NUMBER. RATIONAL NUMBERS
GOES ON AND ON WITHOUT A PATTERN ARE ANY NUMBER THAT CAN BE EXPRESSED
AS A FRACTION, INCLUDING: WHOLE,
INTEGERS, FRACTIONS, DECIMALS AND
PERCENTS
A=170 𝑢2
This square has
an area of 170
units squared.
What is the
approximate
side length?
A=170 𝑢2
DO NOT DIVIDE BY 4!
That is for the side length
if your are given the
perimeter!
Take the SQUARE ROOT!!
Side length is
approximately: 13.03
unitsWhat number times itself is
approximately 170?
PLOT THESE NUMBERS ON A NUMBER LINE
• 5 + 18
•136
15
• 𝑃𝑖 − 2
• 91
9
PLOT THESE NUMBERS ON A NUMBER LINE
• 5 + 18
•136
15
• 𝑃𝑖 − 2
• 91
9
MULTIPLE AND DIVIDEANSWER IN SCIENTIFIC NOTATION
• (8.2 × 104)(9.1 × 106)
• (4.6 × 108)(2.8 × 10−2)
• (8.4 × 108) ÷ (3.5 × 106)
• (5 × 105) ÷ (2.5 × 1010)
MULTIPLE AND DIVIDEANSWER IN SCIENTIFIC NOTATION
• (8.2 × 104)(9.1 × 106)
7.462 X 10^11
• (4.6 × 108)(2.8 × 10−2)
1.288 X 10^7
• (8.4 × 108) ÷ (3.5 × 106)
3.82 X 10^2
• (5 × 105) ÷ (2.5 × 1010)
2.57 X 10^1
• THE DISTANCE FROM THE SUN TO MERCURY IS 3.598 X 10^7 MILES. THE DISTANCE FROM THE
SUN TO NEPTUNE IS 2.798 X 10^9 MILES. HOW FAR IS MERCURY FROM NEPTUNE? WRITE
YOUR ANSWER IN SCIENTIFIC NOTATION.
• USING THE SAME DATA FROM ABOVE, DETERMINE HOW MANY TIMES FURTHER FROM THE SUN
NEPTUNE IS THAN MERCURY.
• THE DISTANCE FROM THE SUN TO MERCURY IS 3.598 X 10^7 MILES. THE DISTANCE FROM THE
SUN TO NEPTUNE IS 2.798 X 10^9 MILES. HOW FAR IS MERCURY FROM NEPTUNE? WRITE
YOUR ANSWER IN SCIENTIFIC NOTATION.
2.76202 X 10^9
• USING THE SAME DATA FROM ABOVE, DETERMINE HOW MANY TIMES FURTHER FROM THE SUN
NEPTUNE IS THAN MERCURY.
7.8 X 10^1