Multiplication of 2-Digit Numbers – Basic 2 Mathematics Lesson Note (Second Term)

Learning Objectives

By the end of this week, pupils should be able to:

• Count and identify numbers from 300-350 and order from 1-350
• Write numbers 301-600 in numerals and words
• Multiply 2-digit numbers by 2 without renaming or exchanging
• Skip count in 2s, 3s, 5s, and 10s confidently
• Recite multiplication tables for 2 and 3
• Apply multiplication to solve real problems

Lesson Content

Day 1: Counting and Number Recognition

Extended Number Range:

• Practice counting 300-350: 300, 301, 302… 350
• Order numbers from 1-350
• Write numbers 301-600 in numerals and words
• Focus on crossing hundreds: 299, 300, 301…

Skip Counting Review:

• 2s: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20…
• 3s: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30…
• 5s: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50…
• 10s: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100…

Day 2-3: Learning Multiplication Tables

The 2 Times Table:

• 1 × 2 = 2
• 2 × 2 = 4
• 3 × 2 = 6
• 4 × 2 = 8
• 5 × 2 = 10
• 6 × 2 = 12
• 7 × 2 = 14
• 8 × 2 = 16
• 9 × 2 = 18
• 10 × 2 = 20

The 3 Times Table:

• 1 × 3 = 3
• 2 × 3 = 6
• 3 × 3 = 9
• 4 × 3 = 12
• 5 × 3 = 15
• 6 × 3 = 18
• 7 × 3 = 21
• 8 × 3 = 24
• 9 × 3 = 27
• 10 × 3 = 30

Day 4: Multiplying 2-Digit Numbers by 2

What Does “No Renaming” Mean?

• Each digit multiplied by 2 gives a single digit (≤ 9)
• No carrying over needed

Step-by-Step Method:

1. Multiply the units digit by 2
2. Multiply the tens digit by 2
3. Write the answer

Example 1: 23 × 2

  23

×   2

—–

   46

• Units: 3 × 2 = 6
• Tens: 2 × 2 = 4
• Answer: 46

Example 2: 41 × 2

  41

×   2

—–

   82

• Units: 1 × 2 = 2
• Tens: 4 × 2 = 8
• Answer: 82

Day 5: Real-Life Applications

Doubling in Daily Life:

• 2 groups of the same amount
• Twice as many
• Double portions

Problem-Solving Examples:

• “If one book costs 23 naira, how much do 2 books cost?”
• “There are 14 boys in one class. How many boys are in 2 identical classes?”

Examples in Class

Multiplication Table Examples:

Reciting the 2 Times Table: “2, 4, 6, 8, 10, 12, 14, 16, 18, 20!”

Reciting the 3 Times Table: “3, 6, 9, 12, 15, 18, 21, 24, 27, 30!”

2-Digit Multiplication Examples:

Example 1: 32 × 2

  32

×   2

—–

   64

Example 2: 21 × 2

  21

×   2

—–

   42

Example 3: 44 × 2

  44

×   2

—–

   88

Real-Life Examples:

Shopping: “Mom bought 2 packets of biscuits. Each packet costs 34 naira. How much did she spend?” 34 × 2 = 68 naira

School Supplies: “Each student needs 12 pencils. How many pencils do 2 students need?” 12 × 2 = 24 pencils

Sports: “A football team has 11 players. How many players are on 2 teams?” 11 × 2 = 22 players

Exercises

Exercise 1: Number Practice

Write these numbers:

1. Three hundred and twenty-five = ___
2. Three hundred and forty-eight = ___
3. 334 in words = ___
4. 347 in words = ___

Exercise 2: Multiplication Tables

Complete the 2 times table:

1. 1 × 2 = ___
2. 3 × 2 = ___
3. 5 × 2 = ___
4. 7 × 2 = ___
5. 9 × 2 = ___

Complete the 3 times table: 6. 2 × 3 = ___ 7. 4 × 3 = ___ 8. 6 × 3 = ___ 9. 8 × 3 = ___ 10. 10 × 3 = ___

Exercise 3: Skip Counting Connection

1. Skip count in 2s to find 7 × 2: 2, 4, 6, ___, ___, ___, ___
2. Skip count in 3s to find 5 × 3: 3, 6, 9, ___, ___

Exercise 4: 2-Digit × 2 (No Renaming)

Solve these:

1. 21 2. 32 3. 41 4. 23 × 2 × 2 × 2 × 2

1. 44 6. 31 7. 22 8. 43 × 2 × 2 × 2 × 2

Exercise 5: Check Your Work

Which problems can be solved without renaming? (Circle YES or NO)

1. 23 × 2 = YES / NO (3×2=6 ✓, 2×2=4 ✓)
2. 34 × 2 = YES / NO
3. 41 × 2 = YES / NO
4. 44 × 2 = YES / NO

Exercise 6: Word Problems

1. One toy costs 24 naira. How much do 2 toys cost? ___ × 2 = ___ 
2. There are 13 girls in one class. How many girls are in 2 identical classes? ___ × 2 = ___ 
3. A farmer collected 32 eggs from one hen house. How many eggs from 2 identical hen houses? ___ × 2 = ___ 
4. Each box contains 21 sweets. How many sweets are in 2 boxes? ___ × 2 = ___ 

Exercise 7: Real-Life Applications

1. If 1 pencil costs 12 naira, how much do 2 pencils cost? 
2. A bus can carry 43 passengers. How many passengers can 2 identical buses carry? 
3. One bag of rice costs 234 naira. How much do 2 bags cost? 
4. There are 22 pupils in one row. How many pupils are in 2 rows? 

Exercise 8: Mixed Practice

1. 4 × 3 = ___
2. 6 × 2 = ___
3. 31 × 2 = ___
4. 7 × 3 = ___
5. 42 × 2 = ___

Fun Activities

• Times Table Chants: Rhythmic recitation of tables
• Doubling Game: Double various quantities around the classroom
• Real Shopping: Use multiplication for buying 2 of everything
• Table Races: Speed practice with multiplication facts

Homework

• Practice 2 and 3 times tables daily
• Find examples of “2 groups of” situations at home
• Practice multiplying 2-digit numbers by 2
• Help parents calculate costs when buying 2 of something

Assessment

• Can the child recite 2 and 3 times tables accurately?
• Do they understand when no renaming is needed?
• Can they multiply 2-digit numbers by 2 correctly?
• Can they apply multiplication to real-life problems?
• Do they connect multiplication to skip counting?