Grade 8 Math Word Problem Practice Farris PreAlgebra 2016

I can solve real world word problems involving math.

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Suppose that a scientist estimates that every square mile of the ocean contains an average of 4.6 × 10 4 pieces of trash. The area of the Earth’s surface that is covered by oceans is approximately 1.2 × 10 8 square miles. Using the estimate, how many pieces of trash are in the Earth’s oceans? A 5.5 × B 1.2 × 10 8 C 3.4 × 10 4 D 2.6 × 10 3 A

A company charges $ for 5 trees and 15 shrubs. The company charges $15.25 more for a tree than a shrub. How much does each shrub cost? A $6.75 B $7.75 C $19.25 D $22.00 A

500 – 25 x ≥ 200

Sasha and Neil had breakfast at a cafe. Muffins cost $1 each, and fruit cups cost $5 each. Sasha had 1 muffin and 1 fruit cup. Neil had 2 muffins and 2 fruit cups. How much did their breakfast cost? Step 1: Find the cost of the muffins. (1 + 2) × $1 = $3 Step 2: Find the cost of the fruit cups. (1 + 2) × $5 = $15 Step 3: Find the total cost. $3 + $15 = $18 Their breakfast cost $18.

Mrs. Stewart bought ice cream treats for 6 children. Each child picked either a sundae or a milkshake. The sundaes cost $2 each and the milkshakes cost $6 each. If Mrs. Stewart spent a total of $16, how many of each type of treat did she buy? Mrs. Stewart bought 5 sundaes and 1 milkshake.

Water is being pumped, at a constant rate, into an underground storage tank that has the shape of a rectangular prism. Which of the graphs below best represent the changes in the height of water in the tank as a function of the time?

Peter drove at a constant speed for 2 hours. He then stopped for an hour to do some shopping and have a rest and then drove back home driving at a constant speed. Which graph best represents the changes in the distance from home as Peter was driving?

In a certain college, 40% of the senior class students is taking Physics, 30% is taking calculus and 10% is taking both. If 40 students are enrolled in the senior class, how many students are taking neither Physics nor calculus? 16 students

Ronald took a total of 12 quizzes over the course of 2 weeks. After attending 3 weeks of school this quarter, how many quizzes will Ronald have taken in total? Assume the relationship is directly proportional. Set up a proportion and solve for n. 12 quizzes n quizzes 2 weeks = 3 weeks 18 quizzes

Joel used 16 centimeters of tape to wrap 8 presents. How many presents did Joel wrap if he used 18 centimeters of tape? Set up a proportion and solve for n. 16 centimeters18 centimeters 8 presents = n presents 9 presents

A receptionist named Zane spends 2 minutes routing each incoming phone call. Write an equation that shows the relationship between the phone calls routed x and the minutes on the phone y. y = 2x

Sasha already owns 3 stamps, and additional stamps are priced at 1 per dollar. Write an equation that shows the relationship between the money spent on additional stamps x and the total number of stamps y. Make a chart. Money spent on Calculation of total Total number additional stamps (x)number of stamps (y) of stamps (y) 0 1(0) (1) (2) + 35 x1(x) + 3x + 3 y is 1 times x, plus 3 ↓ y = x + 3

Before beginning voice lessons, Harold already knew how to sing 1 piece, and he expects to learn 1 new piece during each week of lessons. Write an equation that shows the relationship between the number of weeks x and the number of pieces learned y. Find the pattern: y is 1 times x, plus 1. Write this relationship as an equation. y is 1 times x, plus 1 ↓ y = x + 1