Pre-Algebra Chapter 3 Review

Chapter 3 Review 1)Write each decimal. a) three thousand one and three thousandths b) four and three tenths

Chapter 3 Review 1)Write each decimal. a) three thousand one and three thousandths b) four and three tenths 4.3 Answer

Chapter 3 Review 2)Round to the indicated place. a) , nearest hundredth b) , nearest unit c) , nearest hundred

Chapter 3 Review 2)Round to the indicated place. a) , nearest hundredth b) , nearest unit 238 c) , nearest hundred 1600 Answer

Chapter 3 Review 3)Compare. Use >, < or = a) 0.12 < 0.2 b) -4.7 < -4.6 c)5.080 = 5.08

Chapter 3 Review 3)Compare. Use >, < or = a) 0.12 < 0.2 b) -4.7 < -4.6 c)5.080 = 5.08 Answer

Chapter 3 Review 4)Evaluate each expression for a = 3.02 and b = a) a – b = b) │a│ + │b│ =

Chapter 3 Review 4)Evaluate each expression for a = 3.02 and b = a) a – b = b) │a│ + │b│ = Answer

Chapter 3 Review 5) Solve. a) a = 3.75 b) 0.5 = x / 33

Chapter 3 Review 5) Solve. a) a = 3.75a = 3.72 b) 0.5 = x / 33 x = 16.5 Answer

Chapter 3 Review 6) Solve. a) n = b) -15 – 3(2x – 5) = 1.2

Chapter 3 Review 6) Solve. a) n = n = 100 b) -15 – 3(2x – 5) = 1.2 x = Answer

Chapter 3 Review 7) Write an equation and solve. A pound of peanuts costs $2.87. How many pounds can be bought with $20?

Chapter 3 Review 7) Write an equation and solve. A pound of peanuts costs $2.87. How many pounds can be bought with $20? 2.87p = 20 p = 6.97 lbs. Answer

Chapter 3 Review 8)Write an equation and solve. Three hundredths times a number is equal to the opposite of three and one hundredth.

Chapter 3 Review 8)Write an equation and solve. Three hundredths times a number is equal to the opposite of three and one hundredth. 0.03n = n = Answer

Chapter 3 Review 9)How much more mass does a 2 L bottle of water have than a 2 L bottle of gasoline? (d gas = 0.68 g/cm 3 )

Chapter 3 Review 9)How much more mass does a 2 L bottle of water have than a 2 L bottle of gasoline? (d gas = 0.68 g/cm 3 ) d = m/v  m = dv m water = (1)(2000) = 2000 g m gas = (0.68)(2000) = 1360 g Difference = 2000 – 1360 = 640 g or 0.64 kg Answer

Chapter 3 Review 10)An object falls for 10 sec. Ignoring air resistance, what is its velocity? (a gravity = 9.8 m/sec 2 )

Chapter 3 Review 10)An object falls for 10 sec. Ignoring air resistance, what is its velocity? (a gravity = 9.8 m/sec 2 ) v = at v = (9.8)(10) = 98 m/sec Answer