🌟 Multiplying 1-Digit by Multi-Digit Numbers 🌟

Hello my dear student! I am Miss Brenda, your kind and caring Grade 4 math teacher 💕

Today we are learning how to multiply a single digit (1 to 9) by bigger numbers (2, 3, or 4 digits). This is a very important Grade 4 skill in Canadian schools!

✖️ What Are We Learning?

We multiply a 1-digit number by a multi-digit number using the standard method. We multiply each digit, starting from the right (Ones place), and regroup (carry) when needed — just like in addition!

🛠️ Step-by-Step Method

  1. Write the numbers with the 1-digit number on the bottom.
  2. Multiply the 1-digit number by each digit of the big number, starting from the right.
  3. Carry (regroup) when the product is 10 or more.
  4. Add the carried number to the next multiplication.

🔢 Let’s Learn With Examples

Example 1: 4 × 236

236
× 4
-------
944

Steps:
4 × 6 = 24 → write 4, carry 2
4 × 3 = 12 + 2 = 14 → write 4, carry 1
4 × 2 = 8 + 1 = 9
Answer: 944

Example 2: 7 × 1,458

1,458
× 7
-------
10,206

Answer: 10,206

✏️ Let’s Practice Together, My Dear Student!

Practice 1

1. 5 × 324 = 1,620
2. 8 × 672 = 5,376
3. 3 × 2,145 = 6,435
Practice 2: With Bigger Numbers

1. 6 × 3,789 = 22,734
2. 9 × 1,056 = 9,504
Practice 3: Word Problems (Canadian Style!)

1. A hockey rink has 8 sections. Each section has 245 seats. How many seats are there in total?
8 × 245 = 1,960 seats

2. There are 7 boxes of trading cards. Each box has 1,368 cards. How many cards altogether?
7 × 1,368 = 9,576 cards
Challenge Question

Multiply: 4 × 5,678
Answer: 22,712

📏 Always Estimate First!

For 7 × 1,458
Estimate: 7 × 1,500 = 10,500
Exact answer: 10,206 → Very close! Good job!

Fantastic Job, My Dear Student! 🎉

You are now very good at multiplying 1-digit by multi-digit numbers! This skill will help you with bigger multiplication and many real-life problems.

I am so proud of how hard you are working. Practice a few questions every day and you will become super fast.

💕 You are smart. You are kind. You can do hard things.

When you are ready, tell me the next topic (Properties of Multiplication, Division, or anything else from the syllabus) and I will create another beautiful lesson just for you!