**Mathematics Primary 4 First Term Lesson Notes Week 9**

**Subject:** Mathematics**Class:** Primary 4**Term:** First Term**Week:** 9**Age:** 9 years**Topic:** Division of Whole Numbers**Sub-topic:** Division of 2-Digit and 3-Digit Numbers**Duration:** 1 hour

**Behavioural Objectives:**

- Divide 2-digit and 3-digit numbers by numbers up to 9 with or without remainder.
- Divide numbers that are multiples of 10 up to 50.
- Solve real-life sharing problems using division.
- Apply division in quantitative reasoning problems.

**Keywords:** Division, Remainder, Multiples of 10, Quantitative reasoning, Sharing problems.

**Set Induction:** Begin with a discussion on everyday scenarios where division is used, such as sharing snacks or dividing a class into groups.

**Entry Behaviour:** Pupils should be familiar with basic multiplication facts and simple division concepts.

**Learning Resources and Materials:**

- Division worksheets
- Real-life problem cards
- Counters or manipulatives
- Whiteboard and markers

**Building Background / Connection to Prior Knowledge:** Review basic multiplication and division facts to prepare for dividing larger numbers and applying division in practical contexts.

**Embedded Core Skills:**

- Numerical calculation
- Problem-solving
- Application of division in real-life scenarios

**Learning Materials:**

- Division worksheets with various problems
- Manipulatives for visualizing division
- Examples of real-life division problems

**Reference Books:**

- Lagos State Scheme of Work

**Instructional Materials:**

- Division problem worksheets
- Counters or manipulatives
- Whiteboard and markers

**Content:**

**Dividing 2-Digit and 3-Digit Numbers:****Explanation:**Divide numbers by single-digit divisors with and without remainders.**Example:**48 ÷ 6 = 8 (no remainder), 123 ÷ 7 = 17 with remainder 4.

**Dividing Numbers That Are Multiples of 10:****Explanation:**Divide numbers that are multiples of 10 (e.g., 30, 40, 50) to understand patterns in division.**Example:**40 ÷ 5 = 8, 90 ÷ 9 = 10.

**Solving Real-Life Sharing Problems:****Explanation:**Apply division to divide items or resources equally.**Example:**If 36 candies are shared among 6 friends, each friend gets 36 ÷ 6 = 6 candies.

**Quantitative Reasoning Problems:****Explanation:**Use division to solve problems involving ratios and proportions.**Example:**If a recipe needs 3 eggs for 6 servings, how many eggs are needed for 15 servings? (Divide 15 by 6, then multiply the result by 3).

**Evaluation:**

- 48 ÷ 6 = _____. (a) 8 (b) 7 (c) 9 (d) 6
- 123 ÷ 7 = _____. (a) 17 (b) 16 (c) 18 (d) 15
- 40 ÷ 5 = _____. (a) 8 (b) 7 (c) 9 (d) 6
- 90 ÷ 9 = _____. (a) 10 (b) 11 (c) 12 (d) 9
- If 36 apples are shared among 6 people, each person gets _____. (a) 6 (b) 7 (c) 5 (d) 8
- 81 ÷ 9 = _____. (a) 9 (b) 10 (c) 8 (d) 11
- How many groups of 4 can be made from 32 items? (a) 8 (b) 9 (c) 7 (d) 10
- 50 ÷ 10 = _____. (a) 5 (b) 6 (c) 4 (d) 7
- Divide 72 by 8. The result is _____. (a) 9 (b) 10 (c) 8 (d) 11
- 56 ÷ 7 = _____. (a) 8 (b) 9 (c) 7 (d) 10
- If 45 candies are divided equally among 9 friends, each friend gets _____. (a) 5 (b) 6 (c) 7 (d) 8
- 96 ÷ 12 = _____. (a) 8 (b) 9 (c) 7 (d) 10
- 63 ÷ 7 = _____. (a) 9 (b) 8 (c) 10 (d) 11
- How many 4s are in 32? (a) 8 (b) 7 (c) 9 (d) 6
- 24 ÷ 6 = _____. (a) 4 (b) 5 (c) 6 (d) 3

**Class Activity Discussion:**

**Q: How do you divide a number with a remainder?****A:**Divide as usual and note the remainder after completing the division.**Q: Why is division important in daily life?****A:**It helps with sharing items, dividing tasks, and understanding proportions.**Q: What is the difference between division with and without a remainder?****A:**Division without a remainder results in a whole number, while division with a remainder has a leftover amount.**Q: How can you use division to solve real-life problems?****A:**For example, dividing food among people or calculating equal shares of resources.**Q: What should you do if you can’t divide evenly?****A:**Determine the quotient and the remainder to express the result accurately.**Q: How do you check your division work?****A:**Multiply the quotient by the divisor and add the remainder to check if it matches the original number.**Q: How can manipulatives help with understanding division?****A:**They provide a visual representation of how items are divided into groups.**Q: What are some common mistakes in division?****A:**Misplacing digits, incorrect calculations, and forgetting the remainder.**Q: How can division help in a classroom setting?****A:**For dividing students into groups, sharing classroom supplies, or distributing tasks.**Q: How does division relate to multiplication?****A:**Division is the inverse of multiplication. Understanding one helps with the other.

**Presentation:**

**Step 1:**Review basic division facts and simple division problems.**Step 2:**Introduce and demonstrate dividing 2-digit and 3-digit numbers, including those with remainders.**Step 3:**Practice solving real-life problems and quantitative reasoning exercises using division.

**Teacher’s Activities:**

- Explain and demonstrate division methods.
- Provide practice problems and facilitate discussions.
- Assist pupils with real-life division problems.

**Topic: Division**

**1. What is Division?**

**Definition:**

- Division is splitting a number into equal parts. It tells you how many times one number fits into another.

**Example:**

- Dividing 12 by 3 means finding how many times 3 fits into 12, which is 4 times. (12 ÷ 3 = 4)

**2. Dividing 2- and 3-Digit Numbers by Numbers Up to 9**

**Steps for Division:**

**Dividing 2-Digit Numbers:****Example:**Divide 56 by 8.**Steps:**- How many times does 8 fit into 56?
- 8 fits into 56 a total of 7 times.
**Solution:**56 ÷ 8 = 7

**Dividing 3-Digit Numbers:****Example:**Divide 234 by 6.**Steps:**- How many times does 6 fit into 234?
- 6 fits into 23 three times (6 × 3 = 18). The remainder is 5. Then bring down the next digit (4), making 54.
- 6 fits into 54 nine times (6 × 9 = 54).
**Solution:**234 ÷ 6 = 39

**Practice Problems:**

- Divide 84 by 7.
- Divide 168 by 4.

**3. Dividing Numbers with Multiples of 10 Up to 50**

**Steps:**

**Example:**Divide 40 by 10.**Steps:**- How many times does 10 fit into 40?
**Solution:**40 ÷ 10 = 4

**Example:**Divide 30 by 5.**Steps:**- How many times does 5 fit into 30?
**Solution:**30 ÷ 5 = 6

**Practice Problems:**

- Divide 50 by 5.
- Divide 90 by 9.

**4. Solving Sharing Problems in Real-Life Situations**

**Example 1:**

**Problem:**You have 36 candies and want to share them equally among 9 friends. How many candies does each friend get?**Solution:**36 ÷ 9 = 4 candies per friend.

**Example 2:**

**Problem:**There are 56 books and 8 shelves. If you want to place an equal number of books on each shelf, how many books will be on each shelf?**Solution:**56 ÷ 8 = 7 books per shelf.

**Practice Problem:**

- If 45 pencils are shared equally among 5 students, how many pencils does each student get?

**5. Importance of Division**

**Arts Projects:**Division helps in evenly distributing materials or creating sections.**Sharing Items:**Helps in fair distribution of items among people.**Choreography:**Division is used to split dance moves or routines among performers.

**Summary:**

**Division**splits a number into equal parts.**Practice:**Helps in daily tasks and understanding how to share things fairly.

**Practice Questions:**

- Divide: 72 ÷ 9
- a) 8
- b) 9
- c) 10

- Divide 96 by 12.
- a) 8
- b) 7
- c) 6

- If you have 81 marbles and 9 friends, how many marbles does each friend get?
- a) 9
- b) 10
- c) 8

- Share 40 cookies among 8 people. How many cookies does each person get?
- a) 5
- b) 6
- c) 4

**Learners’ Activities:**

- Solve division problems using different methods.
- Apply division to real-life scenarios and share results.
- Participate in group discussions and problem-solving exercises.

**Assessment:**

- Evaluate pupils’ ability to accurately divide numbers and solve real-life division problems.
- Check understanding through practice problems and discussions.

**Evaluation Questions:**

- What is 48 ÷ 6? (a) 8 (b) 7 (c) 9 (d) 6
- How do you divide 123 by 7? (a) 17 (b) 16 (c) 18 (d) 15
- What is 40 ÷ 5? (a) 8 (b) 7 (c) 9 (d) 6
- 90 ÷ 9 = _____. (a) 10 (b) 11 (c) 12 (d) 9
- If 36 apples are shared among 6 people, each person gets _____. (a) 6 (b) 7 (c) 5 (d) 8
- What is 81 ÷ 9? (a) 9 (b) 10 (c) 8 (d) 11
- How many groups of 4 can be made from 32 items? (a) 8 (b) 9 (c) 7 (d) 10
- 50 ÷ 10 = _____. (a) 5 (b) 6 (c) 4 (d) 7
- Divide 72 by 8. What is the result? (a) 9 (b) 10 (c) 8 (d) 11
- What is 56 ÷ 7? (a) 8 (b) 9 (c) 7 (d) 10
- If 45 candies are divided equally among 9 friends, each friend gets _____. (a) 5 (b) 6 (c) 7 (d) 8
- How do you solve 96 ÷ 12? (a) 8 (b) 9 (c) 7 (d) 10
- 63 ÷ 7 = _____. (a) 9 (b) 8 (c) 10 (d) 11
- How many 4s are in 32? (a) 8 (b) 7 (c) 9 (d) 6
- 24 ÷ 6 = _____. (a) 4 (b) 5 (c) 6 (d) 3

**Conclusion:** The teacher will review each pupil’s work, provide feedback, and ensure understanding of division concepts and their applications in real-life scenarios

**More Useful Links :**

- All Subjects Primary 4 First Term Lesson Notes
- Understanding Lowest Common Multiple (L.C.M.) Mathematics Primary 4 First Term Lesson Notes Week 10
- Highest Common Factor (H.C.F.) Mathematics Primary 4 First Term Lesson Notes Week 11

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