Multiplication of Decimals Up to 2 Decimal Places by 1- to 2

Multiplication of Decimals Up to 2 Decimal Places by 1- to 2

Multiplication of decimals is somewhat similar to multiplication of whole numbers. For sure, you are familiar with the rules on how to multiply. After going through this lesson, you are expected to multiply decimals up to 2 decimal places by 1- to 2-digit whole numbers.

Let us explore the process. Try to answer the given questions. 

Look at the square with one side measuring 4.2 cm.

• 1. Can you guess its perimeter?

• 2. How can you find the perimeter?

• 3. How many sides does the square have?

• 4. What can you say about its sides?

Learning Task 1: Solve the following problems. Write your answers in your notebook.

• 1. weight - 102 lbs , 3 hours , jumping rope

• 2. weight - 75 lbs , 1.5 hours , house cleaning 3

• 3. weight - 105 lbs , 2.6 hours , running

• 4. weight - 117 lbs , 0.6 hours , swimming

Learning Task 2:

Find the product. 

Fill in the Blanks

1.) 4.29 x 12

Fill in the Blanks

2.) 12.47 x 3

Fill in the Blanks

3.) 8.4 x 14

Fill in the Blanks

4.) 16.43 x 5

Fill in the Blanks

5.) 10.78 x 13

Learning Task 3:

 Solve the given problems.

Solve the given problems.

• 1. If a notebook costs ₱ 5.25, how much is the cost of 6 notebooks?

• Understand

• Plan

• Solve

• Check

Open Ended

1. If a notebook costs ₱ 5.25, how much is the cost of 6 notebooks?

a. Understand: What is asked?

Fill in the Blanks

1. If a notebook costs ₱ 5.25, how much is the cost of 6 notebooks?

a. Understand: What are given?

Fill in the Blanks

1. If a notebook costs ₱ 5.25, how much is the cost of 6 notebooks?

b.Plan: What operation will be used?

Fill in the Blanks

1. If a notebook costs ₱ 5.25, how much is the cost of 6 notebooks?

C. Solve: What is the answer?

Solve the following. We will check your answer this afternoon.

Solve the given problems.

• 2. A working student earns ₱ 25.50 per hour. How much does he earn in 4 hours? If he works 3 days a week, how much does he earn in a week?

• 3. Mrs. De Guzman’s class travelled 3.8 miles to the first observatory. The next closest observatory is 13 times far. How far is the second observatory to the first?

Solve the given problems.

• 4. A chocolate bar weighs 8.7 grams. Find the cost and the weight of 115 chocolate bars if each bar costs ₱30.2.

• 5. A kilogram of beef costs ₱ 180.90. How much do 95 kilograms of beef cost?

Thank you!