167k views
4 votes
How can you use mental math to multiply numbers by 10?

User Sushrut
by
3.0k points

2 Answers

7 votes

Answer:

Move the decimal point one space to the right

Explanation:

Ex:

12*10=120 12=12.0 move the decimal one space to the right=120

You can also just add 0 if there isn't a decimal point

13.5*10=135 move the decimal one space to the right

hope this helps :)

User Dvdwasibi
by
3.8k points
3 votes

Answer:

add a zero at the end of the number. 5x10=50. 60x10=600. 700x10=7000 etc.

Explanation:

User Kiechlus
by
3.3k points