8th Grade- 3rd Nine Weeks Review #1 2.4 Solve real world problems requiring scientific notation. A pamphlet is 2.5 x 10-2 inches thick. What would be the thickness of 500 pamphlets? The US imports 1.956 x 106 barrels of oil from Canada every day and 2.31 x 105 from Brazil every day. How many more barrels of oil are imported from Canada that from Brazil each day? A. 1.725 x 106 B. 1.725 x 105 C. 3.54 x 105 D. 3.54 x 104 1.2 Interpret a qualitative graph representing a contextual situation. Which description best fits the graph? A. A sprinter running a 50m race. B. A visitor walking around an amusement park. C. A marathon runner whi stops for a break before continuing on. D. A resting horse that gallops and then slows down to a stop. 5.1 Calculate probabilities of events for simple experiments with equally probable outcomes. What is the probability that the spinner lands on a 3? As a ratio: As a percent:

8th Grade- 3rd Nine Weeks Review #1 2.4 Solve real world problems requiring scientific notation. List the countries in order of population from least to greatest. 1.2 Interpret a qualitative graph representing a contextual situation. Which description best fits the graph? A. Swimming at a consistent pace. B. A ball rolling down a level and then a steeper hill. C. Walking and then running. D. A car traveling at a constant rate that speeds up to pass. Sketch a graph that would represent: The more a student studies, the higher their grade on the exam. Make sure to label the x and y axis. 5.1 Calculate probabilities of events for simple experiments with equally probable outcomes. John has a bag of dimes. In the bag are 8 dimes from the 1980s, 6 dimes from the 1990s, and 4 dimes from the 2000s. If John randomly pics one dime from the bag, what is the probability that it will be a dime from the 2000s? Country Population Belize 3.08 x 105 Cayman Islands 4.9 x 104 Costa Rica 4.26 x 106 Ecuador 1.46 x 107

8th Grade- 3rd Nine Weeks Review #1 2.4 Solve real world problems requiring scientific notation. The speed of light is about 2.00 x 108 meters per second. The average distance from the Moon to Earth is about 3.84 x 108 meters. About how many seconds does light take to travel from the Moon to Earth? The mass of the Earth is about 5.9 x 1024 kilograms. The mass of the Sun is about 3.3 x 105 times the mass of Earth. Which is the best estimate of the mass of the Sun? A. 1.9 x 1019 B. 1.9 x 1029 C. 1.9 x 1030 D. 1.9 x 1031 1.2 Interpret a qualitative graph representing a contextual situation. Which description best fits the graph? A. A ball picking up speed as it rolls down a hill. B. A jogger running at a steady pace on a level trail. C. An earthwork crossing a sidewalk. D. A car speeding up and the traveling on cruise control. 5.2 Use a variety of methods to compute probabilities for compound events. There are 6 kittens at an animal shelter. Two of the kittens are Siamese. What is the probability that the first two kittens that are adopted will be Siamese? A. 1/15 B. 1/10 C. 1/8 D. 1/4

8th Grade- 3rd Nine Weeks Review #1 2.4 Solve real world problems requiring scientific notation. 1.2 Interpret a qualitative graph representing a contextual situation. Which description best fits the graph? A. Walking steadily along the street B. Jogging and then getting tired and slowing down C. A ball rolling down a hill D. A car getting on the highway Write a description that would fit this graph. 5.2 Use a variety of methods to compute probabilities for compound events. Jane is going to toss a number cube and a coin. What is the probability that the number cube will land on a number less than 3 and the coin will land on tails?

8th Grade- 3rd Nine Weeks Review Assessment #1 day 5 Mental Math- none on this day Answers: Answers may be found in this week’s reviews.