12/16 Final Review 2018 Math 7 Day 1 cloned 2018-12-17

by Wendy Sharkey

| 19 Questions1

1 pt

For the final review you must show all work on a separate sheet of paper or no credit!!

Using the number line, determine which values are less than the value of the expression

<--l-----l-----l-----l-----l-----l-----l-----l-----l----l----l----l----l---->

-7 -6 -5 -4 -3 -2 -1

E -1/2

D -1

C -2

A -5 1/2

B -4

2

1 pt

Mario buys several pieces of rope that have each been measured in fractions of a yard. When he looks at his receipt he sees the length of each piece of rope represented as a decimal.

Identify the decimal equivalent for each and sees on her receipt into the table beside its fraction value.

- 0.625
- 0.66
- 1.5
- 0.375
- 0.4375
- 2.66
- 1.625
- 2.285
- 1.6

- 2/3
- 3/8
- 7/16
- 1 5/8

3

1 pt

Sonnya has a stack of nickels and a stack of dimes. There are the same number of coins in each stack. The expression below shows the total value, in cents, for the two stacks, where n is the number of coins in each stack.

3n + 7n

Which expression represents the same amount of money?

A

B

C

D

4

1 pt

Several expressions are shown below. Drag and drop each expression into one of the columns below based on its value.

- -15 + 20
- 15 -(-20)
- -20 - 15
- -20 -(-15)
- -15 -(-20)
- 15 - 20
- 20 + (-15)
- -20 + (-15)

- -5
- 5
- 35
- -35

5

1 pt

What is the product of 1.4 and –3.7?

D -2.3

A 2.3

B -5.1

C 5.1

6

1 pt

Drag each equivalent expression to the box where it belongs. Some expressions may not belong in either box.

- -3(4x + 12)
- -4(3x -9)
- 4(2x - 6)
- -4(-2x - 6)
- 3(-4x +12)
- 2(4x - 12)

- -12x + 36
- 8x - 24

7

1 pt

Which situation can be represented by the expression below? (-2.5)(4)

C The temperature increased $2.50 each hour during a 4-hour period.

B The temperature decreased a total of $2.50 during a 4-hour period.

A The temperature increased less than 2.50 each hour during a 4-hour period.

D The temperature decreased $2.50 each hour during a 4-hour period.

8

1 pt

Throughout the course of a day, 48 cars entered and parked in a parking lot. Enter the number of cars that would need to exit the parking lot in order to result in a difference of 0.

9

1 pt

Using the number line, determine which expressions have a value that is greater than –8. Select Yes or No for each expression.

l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3

- -13 +1
- -6 -(-6)
- -4 -(-7)
- -4 - 6
- -2 - 11

- Yes
- No

10

1 pt

Look at the number line below.

l----l----l----l----l----l----l----l----l----l----l----l----*----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----l----*----l--- -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2

Which expression represents the distance, in units, between the two points?

A l -7 +2 l

C 2 + (-7)

B 2 - (-7)

D -7 + l+2l

11

1 pt

Which of the following fractions are less than or equal to 0.66? Select all that apply.

D 9/14

C 33/50

A 3/7

B 4/9

12

1 pt

A.) A diver descends 12 feet below sea level. She then ascends 4 feet. State the depth of the diver in terms of sea level. Explain how the depth was determined.

B.) Suppose the diver now descends an additional 12 feet. State the new depth of the diver in terms of sea level. Explain how this depth was determined.

C. ) Explain how the diver will reach sea level from the position found in part B.

- 22
- -22
- 8
- -8
- -20
- 20
- -4
- 4
- Swim up 4 feet
- Swim up 20 feet
- Swim up 8 feet
- Swim up 20 feet

- Answer for part A
- Answer for part B
- Answer to part C

13

1 pt

What is the value of

14

1 pt

Taylor is given the expression below to simplify.

7x – 4 + 2x + 3x + 19

Which expression is equivalent to Taylor's expression?

B 3(4x +5)

A 12x + 23

C 3(x +5)

D 10x +19

15

1 pt

16

1 pt

Which expression is equivalent to 3(x – 0.4)?

C 3x - 12

D 3x - 1.2

B 3x - .12

A 3x - 0.4

17

1 pt

Julie types 2050–words in 3 hours. approximately how many words per minute did she type?

D 150,000

C

A 217

B 34 1/5

18

1 pt

Which fractions have the same value as

Determine whether each fraction is equal to or not equal.

- Not Equal
- Equal to

19

1 pt

A company manufactures skateboards. Each skateboard requires 1 6/7 hours of labor to assemble and 2 1/2 hours of labor to finish and stain. The cost of labor to the company is $36.00 each hour.

Find the product

using the distributive property. Describe what each individual term in the expression represents in the context of this situation after you distribute the 36, AND describe what the final result represents. Show your work, and explain

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