Whole numbers( place values, write in expanded forms)- Mathematics- Primary 3- First Term Lesson Note – Week One

First Term Lesson Note for Week One.

Class: Basic 3
Subject: Mathematics
Topic : Whole number (place value, write in words and in figures up to thousand)

Duration: 80 minutes

Periods: Double periods

Instructional Materials : Charts showing place values of Numbers up to Thousand.

Lagos State Unified Schemes of Work for Primary Schools (Primary 1 –  3).

New Method Mathematics for Primary Schools,  Book 3.

 

Learning Objectives : By the end of the lesson, learners will be able to :

i. Define place value

ii. Identify the place values of Numbers up to Thousands

iii.  Write numbers in expanded forms

2453 = 2000 + 400 + 50 + 3

 

Previous Knowledge: Learners are familiar with counting and writing of Numbers from 200 to 600.

 

Whole numbers are numbers without decimals.

A.)Place Value of Numbers:

Place values of numbers is the position of a number in a given set of numbers.
It is value in which a number represents in a set of number.
We assign place value to a group of given numbers starting from the right hand to the left hand.
Unit (U), Tens (T), Hundreds (H) and Thousands (Th)

For example:

Th  H   T   U
7    8   5   3

7 = 7 Thousands = 7000
8 = 8 Hundreds = 800
5 = 5 Tens = 50
3 = 3 Units = 3

In 94, 4 stands for Units = 4

In 27,  2 stand for Tens = 20

In 679,  6 stands for Hundreds = 600

In 8351, 8 stands for Thousands = 8000

Units is a single digit that ranges from 0 – 9.

Tens are two digits which ranges from 10 – 90.

Hundreds are three digits that ranges from 100 – 900.

Thousands are four digits that ranges from 1000 – 9000.

We also have other values of thousands :
Tens of thousands and
Hundreds of thousands

B.) Writing in expanded form:
For examples
In 28, we have 2tens and 8units = 20 + 8

Also, in 163, 1hundred + 6tens + 3units = 100 + 60 + 3

In 2694, we have 2thousands + 6hundreds + 9tens + 4units = 2000 + 600 + 90 + 4

C.) Writing in words:
When writing in words, first assign place value to the given number. Then call each digit with the value assigned starting from left hand to the right hand side.
For examples:
Write in words
H T U
1.) 2 5 7 = Two hundred and fifty seven
Th H T U
2.) 1 5 7 6 = One thousand, five hundred and seventy six
Th H T U
3.) 8 3 0 9 = Eight thousand, three hundred and nine.

 

Presentation Steps:

Step 1: The teacher revises the previous class work with the learners.

Step 2: He/ she introduces the new lesson to the learners by asking, ” what is place value of a number?”

Step 3: He/ she then explains and define place value of Numbers to the learners with series of examples and also calls the learners to solve some on the board.

Step 4: The teacher then explains expansion of numbers using the concept of place value learnt.

 

Evaluation questions:
Answer the following questions.

1.) what is the place value of 5 in the following digits

a. 257 = __________________

b. 5269 = _________________

c. 6531 = _________________

d. 845 = __________________

2.) Complete the following expanded form:

a. 8351 = _________+ ________+ ________+ ________

b. _________ = 6000 + 400 + 30 + 9

c. 7622 = __________ + 600 + ________ + 2

 

Conclusion: At the end of the lesson,  learners were able to answer the questions correctly.

 

Assignment:

1. Write the following numbers in expanded form:

a.  236 = _________ + _________ + __________

b.  4172 = _________ + ________ + _______ + _____

c.  _________ = 7000 + 900 + 50 + 8

2. Write the given numbers in words:
a. 6439 = _________________________

b. 3501 = _________________________

c. 9870 = _________________________

d. 8046 = _________________________

e. 2003 = _________________________