Answers SY2025-26 - 1205040 MJ Grade 7 Mathematics Sem 1 CRUnit Test

Rational Numbers Answers

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Meredith borrows $12,560 and pays 2 percent simple interest each year for 4 years. What is the total amount of interest that she will pay on the loan?

$251.20

$1,004.80

$11,555.20

$13,564.80

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Which percent change represents a percent increase?

Original amount 978New amount 118Percent change 87%

Original amount 574New amount 678Percent change 18%

Original amount 1,055New amount 1,000Percent change 5%

Original amount 1,254New amount 1,045Percent change 17%

Melissa wants to buy a new pair of shoes that have an original price of $45. Melissa has a coupon for 20 percent off to use on them, which amounts to a discount of $9. If sales tax is 9 percent on the final price of the shoes, how much tax will she need to pay?

$3.24

$4.05

$4.86

$4.95

A dining set is priced at $785. If the sales tax is 7 percent, what is the cost to purchase the dining set? Round to the nearest cent if necessary.

$54.95

$792.00

$839.95

$1134.50

Gene paid a deposit on a leased car. The deposit earns 2.8 percent simple annual interest. At the end of the year, the interest that is earned is $22.40. What was the amount of the original deposit?

$0.63

$80.00

$62.72

$800.00

Alec paid the bill for dinner with his clients which totaled $140 before tax and tip. If an 8 percent sales tax was added to the cost of the meal, and an automatic tip was added in the amount of $25.00, what was the total cost of the dinner?

$151.20

$152.00

$165.00

$176.20

The Bishop family celebrated a birthday by dining out at a local restaurant. Their bill was $97.45. Mr. Bishop would like to leave a 18 percent tip at the table for the server. What is the total amount that the family will pay for the dinner? Round to the nearest cent if necessary.

$17.54

$19.49

$114.99

$116.94

Arsha predicted that she would sell 225 magnets. She actually sold 240 magnets. What are the values of a and b in the table below?Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorMagnets225240 ab

a = Negative StartFraction 15 over 225 EndFraction; b = negative 6.7 percent

a = Negative StartFraction 15 over 240 EndFraction; b = negative 6.25 percent

a = StartFraction 15 over 240 EndFraction; b = 6.25 percent

a = StartFraction 15 over 225 EndFraction; b = 6.7 percent

A hardware store sells a 5-pound box of nails for $16.80. The store is having a 20 percent off sale on all merchandise. What is the sale price of one 5-pound box of nails?

$13.44

$13.46

$14.34

$14.46

Alexi’s restaurant bill is $58, and he wants to leave a 20 percent tip. Which expression represents the total amount that Alexi needs to pay?

58 dollars (0.20) + 58 dollars

58 dollars (0.20)

58 dollars (20) + 58 dollars

58 dollars (20)

If Allison wants to find 80% of 630, which table should she use?

A 2-column table with 6 rows. Column 1 has entries 20 percent, 20 percent, 20 percent, 20 percent, 20 percent, total 100 percent. Column 2 has entries blank, blank, blank, blank, blank, blank.

A 2-column table with 5 rows. Column 1 has entries 25 percent, 25 percent, 25 percent, 25 percent, Total 100 percent. Column 2 has entries blank, blank, blank, blank, blank.

A 2-column table with 4 rows. Column 1 has entries 40 percent, 40 percent, 40 percent, Total 100 percent. Column 2 has entries blank, blank, blank, blank.

A 2-column table with 13 rows. Column 1 has entries 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, 8 percent, Total 100 percent. Column 2 has entries blank, blank, blank, blank, blank, blank, blank, blank, blank, blank, blank, blank, blank.

The owner of a health club decides to reduce the $35 membership fee by $5. What is the approximate percent decrease in the fee?

The percent decrease is approximately 0.14%.

The percent decrease is approximately 0.85%.

The percent decrease is approximately 14%.

The percent decrease is approximately 85%.

Stella predicted that she would sell 56 sculptures. She actually sold 30 sculptures. What are the values of a and b in the table below? Round to the nearest tenth if necessary.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorSculptures5630 ab

a = StartFraction 26 over 56 EndFraction; b = 46.4 percent

a = StartFraction 30 over 56 EndFraction; b = 53.6 percent

a = StartFraction 26 over 30 EndFraction; b = 86.7 percent

a = StartFraction 26 over 26 EndFraction; b = 100 percent

Jeremy wants to give a 20% gratuity to his cab driver. His fare is $35.50. What is the total amount he will pay the driver?

$7.10

$17.75

$42.60

$63.90

Lena told her mother that the jeans that she bought were on sale for 10 percent off and she had saved $8.25 on them. PercentsTotal10%10%10%10%10%10%10%10%10%10%100%$8.25$8.25$8.25$8.25$8.25$8.25$8.25$8.25$8.25$8.25 Lena’s mother wanted to know the price of the jeans before the discount to determine if Lena was shopping for jeans that were too expensive. What was the price of the jeans before the discount?

$41.25

$74.25

$82.50

$90.75

Mason gave the waiter a $14.58 tip, which was 15 percent of the dinner bill. What was the amount of the dinner bill before he added the tip?

$9.72

$21.87

$97.20

$218.70

A pan has an original price of $32 but is marked down by 15 percent. Which equation shows the new price of the pan?

(32 dollars) (100 percent minus 15 percent) = (32 dollars) (85 percent) = 27 dollars and 20 cents

(32 dollars) (15 percent) = 4 dollars and 80 cents

(32 dollars) (15 percent) + 32 dollars = 4 dollars and 80 cents + 32 dollars = 36 dollars and 80 cents

(32 dollars) (185 percent) = 59 dollars and 20 cents

Nadal invests $5,678 at an annual interest rate of 4.5 percent for 6 years. For which variable can Nadal substitute the value 5,678 in the simple interest formula?

The following information is known about a savings account.Time = 6 yearsInterest rate = 1.9%Principal = $850What amount of total interest will be earned at the end of year 6?

$16.15

$96.90

$946.90

$9,690.00

Sam predicted that he would sell 15 mugs, but he actually sold 20 mugs. Which expression would find the percent error? Use the table below to help answer the question.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorMugs1520–55

StartFraction 5 over 20 EndFraction (100)

StartFraction 5 over 15 EndFraction

StartFraction 5 over 20 EndFraction

StartFraction 5 over 15 EndFraction (100)

Will bought a new skateboard that was on sale. The original price of the skateboard was $60. The store had marked it down by 20 percent, and Will had a 25 percent off coupon as well. Original price: $6020%20%20%20%20% $4825%25%25%25% $12$12$12What was the price of the skateboard before tax?

$12

$24

$36

$48

Lori was paid a 15 percent commission for the home audio system that she sold. The electronics store had marked up the price of the system by 60 percent over the wholesale price of $264. How much did Lori earn for the sale of the home audio system?

$15.84

$23.76

$39.60

$63.36

What is the retail price of a shirt that has a wholesale price of $12 and is marked up by 60 percent?

$7.20

$19.20

$31.20

$72.00

Nikhil gets paid a 5 percent commission on every pair of shoes that he sells. He earned $1.00 on the last pair of shoes that he sold. The expression that can be used to represent x, the price of the shoes, is What was the price of the shoes?

$5.00

$10.00

$20.00

$25.00

Sameera predicted that she would sell 38 blankets, but she actually sold 28 blankets. Which expression would find the percent error? Use the table below to help answer the question.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorBlankets38281010

StartFraction 10 over 38 EndFraction (100)

StartFraction 10 over 28 EndFraction

StartFraction 10 over 28 EndFraction (100)

StartFraction 10 over 38 EndFraction

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