AnswersDAEP - Math 7 A 20 DAY TERMFinding an Original Amount

Dividing Decimals Answers

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The gardener comes four times each month. Each month, Katrina writes a check, and $85.40 is deducted from her bank balance to pay the gardener. If the gardener came a total of 11 times so far, which best represents the total amount that the gardener has earned?

A
–$939.40
B
–$234.85
C
$234.85
D
$939.40
2
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David made an error when determining the product of (–2.5)(–8.3).Step 1: (–2.5)(–8.3) = (–8.3)(–2.5)Step 2: = (–8.3)(–2) + (–8.3)(–0.5)Step 3: = (–16.6) + (–4.15)Step 4: = –20.75In which step did David make his first error?

A
Step 1
B
Step 2
C
Step 3
D
Step 4
3

Kate gets a paycheck twice a month. Every month, a total of $345.67 is deducted from her paychecks for taxes. If she has received 7 paychecks so far this year, which best represents the total effect the taxes have had on the amount she has earned??

A
–$2,419.69
B
–$1,209.85
C
$1,209.85
D
$2,419.69
4

What is the product of (–1.5)(0.8)?

A
–1.2
B
–0.7
C
0.7
D
1.2
5

In the past twenty years, scientists have seen the sea level rise at a rate of approximately 0.13 inches per year. If this rate continues, which best represents the change in sea level over the next 27 months (2.25 years)?

A
–2.925 inches
B
–0.2925 inches
C
0.2925 inches
D
2.925 inches
6

What is the product of (–22.1)(–5.6)?

A
–123.76
B
–27.7
C
27.7
D
123.76
7

Isaac applied the steps below to find the product of (4.2)(–5.4).Step 1: (4.2)(–5.4) = (–5.4)(4.2) Step 2: = (–5.4)(4) + (–5.4)(0.2)Step 3: = (–21.6) + (–1.08)Step 4: = –22.68Which step shows where Isaac applied the distributive property?

A
Step 1
B
Step 2
C
Step 3
D
Step 4
8

Sydney applied the steps below to find the product of (3.1)(–1.6).Step 1: (3.1)(–1.6) = (–1.6)(3.1) Step 2: = _______________Step 3: = (–4.8) + (–0.16)Step 4: = –4.96Which expression correctly fills in the blank in Step 2?

A
(1.6)(3) – (1.6)(0.1)
B
(–1)(3) + (–0.6)(0.1)
C
(1)(3) – (0.6)(0.1)
D
(–1.6)(3) + (–1.6)(0.1)
9

Which shows two products that both result in positive values?

A
(0.5)(–0.4) and (1.2)(–0.8)
B
(–0.5)(–0.4) and (1.2)(–0.8)
C
(0.5)(0.4) and (–1.2)(–0.8)
D
(0.5)(–0.4) and (1.2)(0.8)
10

For the last 4.5 hours, the temperature has decreased at a rate of 2.8 per hour. Which best represents the overall change in temperature over this time period?

Question illustration
A
–12.6
Option A
B
–1.6
Option B
C
1.6
Option C
D
12.6
Option D

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