Use the numbers on the tiles to complete the steps to find 20 x 40 by factoring the tens

To find \( 20 \times 40 \) by factoring the tens, you can break it down as follows:

1. Express both numbers in terms of their factors:
   \[
   20 = 2 \times 10
   \]
   \[
   40 = 4 \times 10
   \]

2. Now, multiply the factored terms:
   \[
   20 \times 40 = (2 \times 10) \times (4 \times 10)
   \]

3. Use the associative property of multiplication to group the factors:
   \[
   = (2 \times 4) \times (10 \times 10)
   \]

4. Calculate the products separately:
   \[
   2 \times 4 = 8
   \]
   \[
   10 \times 10 = 100
   \]

5. Now multiply the results together:
   \[
   8 \times 100 = 800
   \]

So, \( 20 \times 40 = 800 \).

Would you like more details on any of these steps or have any questions?

Here are 5 related questions for practice:
1. What is \( 30 \times 50 \) using the same factoring method?
2. How would you apply factoring to solve \( 25 \times 60 \)?
3. Can you find \( 12 \times 45 \) by factoring out any tens?
4. What is the result of \( 70 \times 80 \) using factoring?
5. How would you calculate \( 15 \times 90 \) using similar factoring?

**Tip:** When multiplying large numbers, breaking them down into smaller factors, like tens, makes the calculation easier.

Learn how to solve 20 x 40 by factoring the tens with step-by-step instructions. This method involves breaking numbers into factors and using the associative property for easy multiplication. Suitable for students in Grades 4-6.

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