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Learning Task 3: Solve the following problems. Write your solutions and your answers in your notebook.

1. School lunches cost PHP 135.50 per week. About how much would 15.5 weeks of lunches cost?
2. Lorna earns PHP 71.75 per hour for gardening. If she will work for 21 hours this month, then how much will she earn?
3. Paul's father will pay for his new car in 60-month payments. If his car loan costs ₱1,023,660, then how much will he pay for each month?
4. The length of a ribbon is 1.28 m. The length of a rope is 2.74 m longer than the ribbon. What is the length of the rope?
5. A pail holds 5.2 liters of water. A bottle holds 3.9 liters less water than the pail. What is the volume of water in the bottle?

100 Points. Nonsense-Report.

Sagot :

Brainlymomshieidn

Problems Involving Decimals

In solving word problems involving decimals, first, identify what is asked. Then, look for the given facts. Establish the number sentence and the operation/s to be used. Make sure that the operation/s used will bring out the correct answer. Check the answer using the number sentence and see if it will satisfy the given condition.  

Learning Task 3:

Answers:

  1. ₱2100.25
  2. ₱1506.75
  3. ₱17061
  4. 4.02 m
  5. 1.3 liters

Solutions:

1. Asked: The cost of 15.5 weeks of lunches.

  Given: ₱135.50  - cost of lunch per week

              15.5 - number of weeks

  Operation: multiplication

  Number Sentence: ₱135.50 x 15.5 = N

  Solution: ₱135.50 x 15.5 = N

                  ₱2100.25 = N

  Answer: 15.5 weeks of lunches would cost ₱2100.25.

2. Asked: Lorna's earnings.

   Given: ₱71.75 - Lorna's earning per hour from gardening

               21 - number of hours Lorna have worked

  Operation: multiplication

  Number Sentence: ₱71.75 x 21 = N

  Solution: ₱71.75 x 21 = N

                  ₱1506.75 = N

  Answer: Lorna will earn ₱1506.75.

3. Asked: The amount Paul's father had to pay each month.

   Given: ₱1023660  - cost of the car loan

               60 months - terms of payment

  Operation: division

  Number Sentence: ₱1023660 ÷ 60 = N

  Solution: ₱1023660 ÷ 60 = N

                                ₱17061 = N

  Answer: Paul's father had to pay ₱17061 each month.

4. Asked: The length of the rope.

   Given: 1.28 m - length of the ribbon

               2.74 m - the difference between the length of the ribbon and the

                              rope.

  Operation: addition

  Number Sentence: 1.28 + 2.74 = N

  Solution: 1.28 + 2.74 = N

                            4.02 = N

  Answer: The rope is 4.02 m long.

5. Asked: The volume of the water in the bottle.

   Given: 5.2 liters - volume of the pail

               3.9 liters - the difference between the volume of the pail and the

                                 bottle

  Operation: subtraction

  Number Sentence: 5.2 - 3.9 = N

  Solution: 5.2 - 3.9 = N

                           1.3 = N

  Answer: The volume of the bottle is 1.3 liters.

How to solve problems involving decimals: https://brainly.ph/question/5010979

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