LESSON PLANNING OF DIVISION OF THE DECIMALS

Subject Mathematics

Grade 5^{th}

Students` Learning Outcomes

- Divide decimals by 10, 100, and 1000.

Information for Teachers

- When multiplied any decimal number with 10, 100, or 1000, then decimal point moves right to the number.

- So, by multiplication, the value of the number is increased further.
- When any decimal number is divided by 10, 100, or 1000 then decimal point moves left to the number. So, the value of number will further decreased by division.

- To divide a decimal by 10, move the decimal point one place towards left.
- To divide a decimal by 100, move the decimal point two decimal places towards left.
- To divide a decimal by 1000, move the decimal point three decimal places towards left.

- Use textbook when and where required.

Material / Resources

Writing board, chalk / marker, duster, textbook

Introduction

- Ask students to recall the steps of the multiplication of decimal.

- Once multiplication is practiced, use the same method to introduce division.
- Decimal point moves to left and number become smaller.
- Ask following questions:

o What is the reverse process of addition? (Subtraction)

o What is the reverse process of multiplication? (division)

o In multiplication decimal moves to where? (right)

o In division decimal moves to? (left)

o In multiplication number become bigger, in division number becomes smaller!

Write on the board 500 and ask place value of 5? (Hundreds)

- Ask whether the number is increased or decreased? (Similarly talk about the change in place value)

Development

Activity 1

- Working in groups asks the students to write steps of dividing with 10, 100, or 1000.
- Groups will present their work and reason out.

Pair works:

- Calculate the following;

Sum up / Conclusion

- When you divide by 10, 100, or 1000 the decimal point moves to the left.
- Move the decimal point once for each zero you are dividing by.
- Close the session with few more examples;

Assessment

- Give some questions to solve e.g.
- 7.321 x 10, 3.421 x 100, 9, 633 x 1000

- Complete the following table:
- Use textbooks where and when required.

Follow up

- Solve the following questions;

- Ask the students to solve the questions given in their textbook .