Posted by **Alex** on Tuesday, November 29, 2011 at 11:09pm.

How can you use mental math to multiply 800 x 5?

- 3rd grade math -
**John**, Tuesday, November 29, 2011 at 11:20pm
8*5=40

40 add in two zeroes

to get 4000

- 3rd grade math -
**Benjamin**, Wednesday, November 30, 2011 at 12:26pm
Just multiply 8 and 5 you will get 40 when you add two zeros you get 4000.Check your answer on paper, If you wish to

- 3rd grade math -
**Anonymous**, Tuesday, May 26, 2015 at 8:53pm
How can you use mental math to multiply 800 times 5

## Answer This Question

## Related Questions

- 3rd grade - How can you use two multiplication facts to multiply 6 x 9? Use the ...
- 3rd grade math - If you multiply me by 2, I become a number greater than 20 and ...
- 3rd grade math - if you multiply me by 2 I become a number greater than 20 and ...
- 3rd grade Math - Actual question on homework."EXPLAIN HOW YOU CAN BREAK APART ...
- 3rd grade math - Writing in math, how would a 3rd grader explain how to use ...
- 3rd grade - math to endure the heat,firefighters wear protective gear that ...
- 3rd grade math - The question reads: Reasoning: How can counting by 10's help ...
- Math - What is the best way to use mental math to multiply (5x18)x20?
- 3rd grade math II - I need to write a sentence for the following Reasoning: How ...
- Math - Do you have any 3rd grade math practice worksheets that I can use with my...

More Related Questions