Register
Explain using the basic fact can help you find 10×20×30×40 mentally
129k views
2 votes
Explain using the basic fact can help you find 10×20×30×40 mentally

User Michiel J Otto
by
9.0k points

1 Answer

3 votes
Multiply 20 by 10 first
Then 200 by 30 which is 6000
Then 6000 by 40 which is 240000

Basically just multiply the numbers that's aren't 0
Like 2 in 200 times 3 in 30
Which is 6 then add the 0s so 6+000=6000
User Vork
by
8.3k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

What is .725 as a fraction
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
The cost of 5 similar digital cameras and 3 similar video cameras is 3213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and a video camera. How much does he
Link Copied!