answersLogoWhite

0


Best Answer

First take out the 2 zero's. then you have 8x5. Multiply then add the 2 zero's. now you have 8500 which is the answer.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How can you use mental math to multiply 800 times 5?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How can you use mental math to multiply 800 x5?

yes you can just multiply the 8 and the 5 then add all the zeros you have in the 800 to your answer. EX. 8x5=45 <-- your answer then add the 2 zeros your final answer is 4500


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

First you just multiply 8 by 5, which is 40. Tack on two 0's at the end to get 4000.


What is 42 of 800?

Multiply 0.42 times 800. 336


What is 42 percent of 800?

Multiply 0.42 times 800. 336


How much is 100 divided by 0.125?

800


What is the value of 800 pounds of gold?

The value of an ounce of gold changes daily on the spot gold market. To calculate the value of 800 pounds of gold you multiply the spot price of gold for that day times 16 (for one pound of gold) and then multiply that amount times 800. For example if the price of an ounce of gold is $850 today, you would calculate the value of 800 pounds of gold as follows: $850 X 16 X 800=$10,880,000


What is 800 x 800 in inches?

. If you want just to multiply 800 x 800 then 640,000 square inches


What is 800 times 2?

800 times 2 is exactly the same as 2 times 800+ 800+ 800--------=1600


What is 1452 percent of 800?

If your 800 equals 100%, you simply multiply it by 14.52 800 x 14.52 = 11616


how many times does 800 go into 640,000?

It goes in 800 times.


What is two hundredths of 800?

Two hundredths [2/100] is the same as 2 in every hundred [or 2%]. 800 is the same as 8 x 100; or 8 hundreds. So "2/100 of 800" is 2 in every one of those 8 hundreds; or 2 x 8 = 16. To work this out divide 800 by 100 then multiply by 2. The answer is 16. Alternatively if it is a mental arithmetic question take off the 2 zeros and multiply by 2. 8 X 2 = 16


What is 800 increased by 30 percent?

There are a few ways you can find what 800 increased by 30 percent is. 1) You can find 30% of 800 by multiplying 800 with 0.3 and then adding the two together. 2) you can just multiply 800 by 1.3 and directly get the answer. With these two, you should know that to convert a percentage into a decimal, you move the decimal point two spots over (123.4% = 1.234) 3) If you don't have a calculator, you can find an easy percentage and multiply it so you get 30% (for example: 10% of 800 = 80. 10% times 3 = 30% so 80 times 3 = 240. Therefore, 30% of 800 is 240.) In any case, the answer would be 1040.