Prepared by: Paulene Mae A. Albelar
I. Objectives
At the end of the lesson, the students should be able to:
A. (Cognitive)Multiply 5 or more digit factors having 1 to 3 zeros in both factors without regrouping
B. (Psychomotor)Find the product using the process of long multiplication with ease
C. (Affective)Show carefulness in working with numbers
II. Subject Matter
Skill: Multiply 5 or more digit factors having 1 to 3 zeros in both factors without regrouping.
References: Textbooks in Math 4
Materials: Window Cards
Value: Carefulness
III. Procedure
A. Preparatory Activities
1. Drill
Drill on basic multiplication facts using window cards. Give them exact time each pupil finishes.
2. Mental Computation
Answer the following in the notebook.
213 842 524 400 328 x 4 x 2 x 3 x 6 x 3
3. Review
Show how to solve for the product using the long way on the board. Elicit the steps, be sure you follow correctly and carefully the steps in multiplying using long method. Are you also careful in doing other things aside from activities in Math? How? Find the product: 65432 x 765 What did you do to get the correct product?
4. Motivation
Sing the song (tune: Are you sleeping) Mathematics! Mathematics! How it thrills, how it thrill Addition, Subtraction Multiplication, Division Mental Math! Mental Math! (Repeat) B. Developmental Skills
1. Presentation
Analyze the problem
-How many baskets of fish did Mang Celso deliver?
-How many fishes are in each basket?
-What is asked?
-What is the operation to be used?
-Show the solution.
Write on the board 400 x 30 1200 fishes
Written exercises?
10 811 20 011 20 500 80 003 x 200 x 60 x 101 x 300
40 001 95 000 70 100 x 2 000 x 100 x 300
How did you come up with the answers? Is there a faster way to solve the product? Elicit the patterns.
2. Group Activity
Divide the class into two groups.
Give them activity sheets where the exercise are written. Each group will report their answers.
60 002 30 052 24 320 23 001 x 300 x 1001 x 40 x 200
11 000 21 200 30 200 x 500 x 400 x 30
3. Generalization
How do we multiply 4- to 5- digit factors having 1 to 3 zeros in both factors?
C. Application
There are 12 300 members of Barangay Masikap. If each member contributed 30 packs of noodles for the Lutong Bayan Project, how many pack of noodles were collected?
IV. Evaluation
A. Find the product
44 000 60 210 30 011 28 000 14 345 x 30 x 200 x 101 x 430 x 280
B. Answer the following
1. Multiply 7 600 and 200, what will be the product?
2. What is 143 450 repeated 280 times?
3. If the factors are 14 780 and 90, what is the product?
4. What is 56 396 multiplied to 500?
V. Assignment
Find the product
30 860 40 947 54 008 56 000 28 808 x 70 x 500 x 30 x 800 x 280
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