Solved Examples of 2-Digit by 2-Digit Multiplication

📚 Quick Study Guide

• 🔢 Step 1: Multiply the ones digit of the bottom number by the top number. Write the result.
• ➕ Step 2: Multiply the tens digit of the bottom number by the top number. Add a zero as a placeholder in the ones place. Write the result below the first result.
• ✅ Step 3: Add the two results together to get the final answer.
• 🧮 Example: Let's say we want to multiply $23 \times 12$.
  • First, multiply $23 \times 2 = 46$.
  • Next, multiply $23 \times 10 = 230$.
  • Finally, add $46 + 230 = 276$. So, $23 \times 12 = 276$.
• 💡 Tip: Always double-check your work to avoid errors!

📝 Practice Quiz

1. What is $15 \times 12$?
   1. 160
   2. 170
   3. 180
   4. 190
2. Calculate $25 \times 11$.
   1. 265
   2. 275
   3. 285
   4. 295
3. Solve $32 \times 13$.
   1. 406
   2. 416
   3. 426
   4. 436
4. What is $41 \times 21$?
   1. 841
   2. 851
   3. 861
   4. 871
5. Compute $55 \times 10$.
   1. 500
   2. 550
   3. 600
   4. 650
6. Determine the product of $22 \times 22$.
   1. 484
   2. 474
   3. 464
   4. 454
7. Find the result of $18 \times 15$.
   1. 250
   2. 260
   3. 270
   4. 280