Chapter 5, 6 & 7 Cumulative Test

PROBLEM WORK ANSWER 1 Solution: (A) Find the best buy on pasta sauce (1 qt is 32 oz). 45 oz for $1.59

A) 45 oz for $1.59 C) 1 qt for $1.29 45 oz for $1.59 B) 1 qt 16 oz for $1.99 D) 48 oz for $1.79 =>1 oz for $1.59/45 = $0.0353

1 qt for $1.29

=> 32 oz for $1.29

=> 1 oz for $1.29/32 = $0.0403125

1 qt 16 oz for $1.99

=>48 oz for $1.99

=> 1 oz for $1.99/48 = $ 0.041458

48 oz for $1.79

=>1 oz for $1.79/48 = $0.03729

best buy is 45 oz for $1.59

Since it has least cost for 1 oz. 2 (D) (D) Which rates are not equivalent? Since

A) 62.5 miles? 125 miles C) 60 miles? 120 miles 65 x 4 = 260 = = 2 hours 4 hours 2 hours 4 hours 125 x 2 = 250 B) 65 miles? 130 miles D) 65 miles? 125 miles = = Since both values are different, thus 2 hours 4 hours 2 hours 4 hours Chapter 5, 6 & 7 Cumulative Test

the rates in part (D) are not equivalent. 3 Rate = 20% (C) Identify the rate in the following statement: Answer: (C) 130 is 20% of 650.

A) 130 B) 650 C) 20%

4 I = PRT Answer: (C) Ms. Jefferson has been given a loan of $20,000 for 1 year. If the 800 = 20000*R*1 interest charged is $800, what is the interest rate on the loan? R = 800/20000 = 0.04

A) 5.5% B) 5% C) 4% D) 4.5% Thus rate = 4% Chapter 5, 6 & 7 Cumulative Test

5 Solution: Answer: (A) Find the missing length of the right triangle. Let the missing side be x then

x^2 =20^2 + 48^2

x^2 = 400 + 2304

x^2 = 2704

x = 52

A) 52 B) 54 C) 53 D) 51 answer: 52

6 1 L = 1.06 quarts Answer: (D) Complete the statement. 12 L = 12*1.06 = 12.72 quarts

12 L = ______qt Answer: (D)

A) 1.14 B) 11.4 C) 1.272 D) 12.72

7 0.3 cm Answer: (A) Choose the most reasonable measure. Answer: (A)

The thickness of a piece of cardboard.

A) 0.3 cm B) 0.03 km C) 3 cm Chapter 5, 6 & 7 Cumulative Test

8 Third angle = 180 –(34 + 126) = 20 Answer: (B) Label the triangle as equilateral, isosceles, or scalene. degree

This triangle is scalene as all the angles are different.

Answer: (B)

A) Isosceles B) Scalene C) Equilateral

9 Third angle = 180 –(60 + 60) = 60 Answer: (A) Label the triangle as equilateral, isosceles, or scalene. degree

This triangle is equilateral as all the angles of the triangles are 60 degrees.

Answer: (A)

A) Equilateral B) Isosceles C) Scalene

10 For converting seconds to minutes Answer: (D) Complete the following statement. divide by 60.

540 s = ______min 540/60 = 9 min

A) 4.5 B) 18 C) 13.5 D) 9 Answer: (D) Chapter 5, 6 & 7 Cumulative Test

11 Write 0.21 as a percent. Multiply by 100 Answer: (A) 0.21*100 = 21% A) 21% B) 210% C) 0.21% D) 2.1% Answer: (A) 12 392 feet 392/8 = 49 ft/s Answer: (B) . Find the rate: 8 seconds Answer: (B) ft ft ft ft A) 294 s B) 49 s C) 94 s D) 0.02 s

13 supplement of A = 180 -72 Answer: (D) m� A 72 Answer: (D) Find the supplement of A.

A) 118 B) 18 C) 78 D) 108

14 Line segment Answer: (B) Is the object a line or a line segment? Answer: (B)

A) Neither B) Line segment C) Line Chapter 5, 6 & 7 Cumulative Test

15 Third angle of triangle (a) Answer: (a) Which two triangles are similar? and (c) = 180 –(42 + 50) = 88 degrees

Third angle of triangle (b)

= 180 –(92 + 50) = 38 degrees

Third angle of triangle (a)

= 180 –(88 + 42) = 50 degrees

Triangle (a) and (c) as all the angles A) (a) and (c) B) (b) and (c) C) (a) and (b) of these two triangles are equal.

16 25  5*5 = 5 Answer: 5 Find the square root.

17 30% of 200 Answer: 60 What is 30% of 200? = 0.30*200 = 60 18 1 Multiply by 100 Answer: 12.5% Write 8 as a percent. (1/8)*100 = 12.5% 19 Talon’s rate = 1000/5 = 200 words Samantha is Talon reads 1,000 words in 5 minutes, and Samantha reads 650 per minute faster reader. words in 2 minutes. Who is the faster reader? Samantha’s rate = 650/2 = 325 words per minute Chapter 5, 6 & 7 Cumulative Test

Samantha is faster. 20 2? 6 2 x 15 = 30 pair of fractions = . 6 x 5 = 30 is proportional. Determine whether the pair of fractions is proportional: 5 15 Both are equal so the pair of fractions is proportional.