Thursday November 10, 2011

Today we will work in class on a test review sheet that I put together. The review sheet is very similar to the test. Test will include 15 multiple choice questions and 4 equations to solve. Below is the review we will work on in class today. I will post answers soon so students can check their answers. We will go over any questions on Monday, then test on Tuesday

Unit 3 test review

When adding or subtracting decimals,   ___line_______up the _____decimals______ and add  ___zeros____  if necessary

When multiplying decimals, ____push multiples to the right____________, then add the decimal back into the ___product____.

Round the following to the given place value

1.)     4.525    hundredths      __4.53___     2.)    49.3894   thousandths __49.389___    3.)   0.0293  tenths  ___0.0___

Put the following in order from least to greatest

4.)   2.34, 2.354, 2.193, 2.843, 2.3431                               5.)   14.3934, 15.984, 12.942, 14.45, 14.4294

2.193, 2.34, 2.3431, 2.354, 2.843                                       12.942, 14.3934, 14.4294, 14.45, 15.984

6.)  John bought drinks for the 12 players on his basketball team. If each player got 1 drink, and drinks cost $1.25 each, how much did John spend on drinks?

Answer:       12 x 1.25 = $15

7.) Justin went shopping for school supplies. He bought 10 pencils for $0.45 each, 6 pens for $1.35 each, and 2 packs of paper for $2.75 each. What was his total cost?

Answer:      10 x 0.45 = 4.5      6 x 1.35 = 8.1        2 x 2.75 = 5.5         4.5 + 8.1 + 5.5 = $18.10

8.) In a hot dog eating contest, 25 contestants ate an average of 13.3 hot dogs each. How many total hot dogs were consumed during the competition?

Answer:      25 x 13.3 = 332.5 hotdogs

9.)  There are 25 players on a baseball team. Each player had to purchase a uniform for $56.75. How much did the team spend in all for uniforms?

Answer:     25 x 56.75 = $1418.75

10.)  The water company charges $12.75 for every 500 gallons of water used, up to 1000 gallons. After 1000 gallons, they charge $9.55 per 500 gallons. Suppose you used 2000 gallons of water this month, how much is your bill?

Answer:      12.75 x 2 = 25.5        9.55 x 2 = 19.1           25.5 + 19.1 = $44.6

11.)  Suppose gas costs $3.12 per gallon. What is the best estimate of the cost  of 20.4 gallons of gas?

Answer:   20.4 is about 20     3.12 is about 3         20 x 3 = $60

12.)  What is the best estimate of 14.84 + 2.03 + 9.93?     _15_ + _2_ + _10_  = 27

13.) Josh has 8475 baseball cards in his collection. He is putting them in boxes for storage. Each box holds 25 cards. How many boxes will he need to hold all of his cards?

Answer:    8475 / 25 = 339

14.)   Find the product of one and twenty four hundredths times four and two tenths

Answer:   1.24 x 4.2 = 5.208

15.)  Amy knows that the distance to the Earth to the sun is 93,000,000 miles. How would she write this in scientific notation?

Answer:     9.3 x 10^7 miles

Solve for the following variables  YOU MUST SHOW YOUR WORK ON THE TEST!!!

16.)        4g = 16.84                                                                            17.)       k ÷ 3.4 = 12.8

Answer: 16.84 / 4 = 4.21     k = 4.21                                     Answer:  12.8 x 3.4 = 43.56    k = 43.52

18.)        h - 14.3 = 21.8                                                                    19.)      f + 4.32 = 19.93

Answer:    21.8 + 14.3 = 36.1      h = 36.1                             Answer:   19.93 - 4.32 = 15.61   f = 15.61