Dog Walks, Lawn Care, and Decimal Decisions

Track a part-time business’s earnings and costs with decimal operations.

1. Update the Ledger

Maya and Jordan run a part-time dog-walking and lawn-care business. Calculate each ledger entry using a standard algorithm. Give exact answers; do not round.

Combine two recorded work times.

128.75 + 46.908 = minutes

Find the difference between two lawn areas.

204.6 − 87.935 = square meters

Combine the distances walked during three weeks.

18.45 + 7.806 + 24.9 = kilometers

A work log lists 100 minutes available and 36.784 minutes already used. Which value correctly gives 100 − 36.784?

A. 64.784 minutesB. 63.216 minutesC. 73.216 minutesD. 136.784 minutes

2. Calculate Products and Quotients

These calculations come from the business’s rate and work records. Use standard algorithms and show your work. Give exact answers.

16.75 × 3.6 =

24.08 × 1.25 =

96.72 ÷ 2.4 =

18.36 ÷ 0.45 =

Jordan needs to calculate 7.56 ÷ 1.2. Which calculation has the same quotient and a whole-number divisor?

A. 7.56 ÷ 12B. 75.6 ÷ 120C. 756 ÷ 12D. 75.6 ÷ 12

3. Make Business Decisions

Choose the operations needed for each situation. Show your calculations using standard algorithms. Earnings minus costs gives the amount kept.

10.

The table shows all earnings and costs for one weekend.

Weekend Ledger
Service	Earnings ($)	Costs ($)
Dog walking	48.75	17.86
Lawn care	62.40	9.95

How much money did the business keep after paying both costs? dollars

11.

The business charges $7.25 for each dog-walking visit. Last week, dog-walking earnings totaled $108.75. Every visit was charged at the same price.

How many dog-walking visits were completed? visits

12.

Maya works 2.75 hours on a lawn-care job at $18.60 per hour. Supplies for that job cost $8.45.

How much of the job’s earnings remains after paying for supplies? dollars

13.

Jordan sets aside $65.00 for expenses. Jordan spends $19.85 on dog-walking supplies and $12.48 on mower fuel.

How much of the expense money is left? dollars

14.

For a lawn-care job, Jordan calculates 12.5 × 2.4 and records $300 in earnings. Jordan says, “I found 125 × 24 = 3,000, then moved the decimal one place left.” Explain the decimal-placement error and give the correct earnings.