How do you multiply 512 x 46?

1. How do you multiply 512 x 46? Those are really big numbers!

2. In this lesson you will learn how to multiply multi-digit numbers by using the standard algorithm.

3. Product – The result when two numbers are multiplied. For Example: 4 x 5 = 20 product

4. Multiplication is repeated addition. 32 + 32 + 32 + 32 + 32 32 x 5 Multiplication is faster!

5. Multiplying by powers of 10. 36 x 10 = 360 36 x 100 = 3,600 36 x 1,000 = 36,000

6. Multiplying each digit as if it represents a number of “ones.” It is important to remember the place value of each digit. 36 x 5 = 30 x 5 + 6 x 5

7. Multiply 512 x 46 512 x 46 First, we need to multiply 512 by 6. Then we need to multiply 512 by 40.

8. 1 512 x 46 Adding a zero shows that we are multiplying by 10’s. 2 30 7 + 4 20 0 8 23,552 Next, we add the partial products.

9. 2 3 405 x 57 Adding a zero shows that we are multiplying by 10’s. 5 28 3 + 2 20 0 5 23,085 Next, we add the partial products.

10. In this lesson you have learned how to multiply multi-digit numbers by using the standard algorithm.

11. Multiply 422 x 18.

12. Write a real world problem that could be solved by using 32 x 12.

13. Every student received 24 pencils. If there are 20 students in my class, how many pencils did we have in all?

14. Write a multiplication equation that has a product of 3,600.

15. Multiply 290 x 73.

16. Multiply 64 x 48.