Lesson Notes By Weeks and Term v5 - Grade 3

Lesson Video

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Performance objectives

• Identify the value of each digit in a 3-digit number.
• Break down (decompose) 3-digit numbers.
• Read and write number names up to 999.
• Compare and order numbers up to 999.

Lesson summary

This week, we begin our exciting journey into the world of big numbers, all the way up to 999! Understanding these numbers is a super important skill for everyday life in South Africa. When you go to the spaza shop, you'll see prices like R125 for a large bag of maize meal. When you travel, you might see a sign that says 'Durban 580 km'. Even the year we live in is a big number! By understanding how these numbers are built, you become a maths champion, able to read, write, compare, and work with almost any number you see around you. This topic is the foundation for adding, subtracting, and all the other amazing maths we will learn this year.

Lesson notes

This week, we begin our exciting journey into the world of big numbers, all the way up to 999! Understanding these numbers is a super important skill for everyday life in South Africa. When you go to the spaza shop, you'll see prices like R125 for a large bag of maize meal. When you travel, you might see a sign that says 'Durban 580 km'. Even the year we live in is a big number! By understanding how these numbers are built, you become a maths champion, able to read, write, compare, and work with almost any number you see around you. This topic is the foundation for adding, subtracting, and all the other amazing maths we will learn this year. By the end of this week's lessons, learners will be able to: Identify and state the value of each digit in a 3-digit number (e.g., in 524, the 2 has a value of 20). Decompose 3-digit numbers into multiples of hundreds, tens, and units (e.g., 672 = 600 + 70 + 2). Read number symbols up to 999 and write the corresponding number names (e.g., 481 is 'four hundred and eighty-one'). Write number names up to 999 in the correct number symbols (e.g., 'nine hundred and three' is 903). Compare and order whole numbers up to 999 using the words 'greater than', 'less than', 'equal to' and the symbols >, means greater than* (The crocodile's mouth is open to eat the bigger number!) ** 825 Guided Practice (With Solutions)

Question 1: Bongiwe saves her money in a tin. She has 3 R100 notes, 7 R10 notes, and 5 R1 coins. How much money does she have in total?

Solution: Hundreds: 3 R100 notes is 3 x 100 =

3

0

0. Tens: 7 R10 notes is 7 x 10 =

7

0. Units: 5 R1 coins is 5 x 1 =

5. Total: Add the values together: 300 + 70 + 5 =

3

7

5. Commentary: This question connects the idea of place value directly to South African money, which is a familiar concept. We built the number by looking at its hundreds, tens, and units parts separately before combining them.

Question 2: Write the number 'five hundred and sixteen' using digits.

Solution: 'five hundred' tells us the digit in the Hundreds place is 5. 'sixteen' is the name for the number

1

6. This means we have 1 ten and 6 units. So, the digit in the Tens place is 1 and the digit in the Units place is

6. Putting it together:

5

1

6. Commentary: It's important to recognize that 'sixteen' represents both the tens and units places. Learners sometimes make the mistake of writing

5

0

0

1

6. This exercise helps them combine number names correctly.

Question 3: Arrange these numbers from smallest to largest: 498, 501,

4

8

9. Solution: Step 1: Compare the Hundreds. We have two numbers with a '4' in the hundreds place (498, 489) and one with a '5' (501). The one with the '5' is the largest. So, 501 is the last number in our list.

Step 2: Compare the remaining numbers (498 and 489). Their hundreds are the same (both are 4). So we look at their tens.

Step 3: Compare the Tens. 498 has a '9' in the tens place. 489 has an '8' in the tens place. Since 8 is smaller than 9, 489 is smaller than

4

9

8. Final Order: The smallest is 489, then 498, and the largest is

5

0

1. The correct order is: 489, 498,

5

0

1. Commentary: This problem requires a systematic, multi-step comparison. By following the H-T-U comparison rule, we can order any set of numbers correctly. Independent Practice (Questions Only) In the number 734, what is the value of the digit 3? In the number 901, which digit is in the hundreds place? Write the number 458 in words. Write the number 'two hundred and seventy' in digits. Break down the number 892 using expanded notation (e.g., 123 = 100 + 20 + 3).

Fill in the correct symbol: , or =. a) 245 ___ 254 b) 680 ___ 608 c) 999 ___ 999 What number is made up of 6 hundreds, 0 tens, and 4 units? Arrange these numbers from largest to smallest: 317, 173,

3

7

1. Sipho has 245 marbles. Thabo has 254 marbles. Who has more marbles? Use the digits 5, 2, and 8 to make the smallest possible 3-digit number. Real-life Applications / Integration Shopping at a Supermarket: Learners can look at flyers from stores like Pick n Pay or Checkers. They can find items that cost more than R100, like a 5kg bag of rice or a large bottle of cooking oil. They can compare the prices of two different brands of the same item (e.g., Ricoffy for R89 vs. another brand for R105) and determine which is 'less than' the other.

Sports Scores: In sports like cricket, teams often score hundreds of runs.

A final score could be South Africa: 325 runs and Australia: 318 runs. Learners can identify who won by comparing the two 3-digit numbers, seeing that 325 >

3

1

8. This connects maths to popular national sports.

Community and Geography: Look at a map of South Africa or your province. Find the distances between towns. For example, the distance from Polokwane to Pretoria is about 314 km. The distance from Polokwane to Musina is about 201 km. Learners can compare these distances to see which journey is longer. They can also read house numbers in their street, which often follow a sequence.