Multiplying with Multiples of 10, 100 or 1000

Can you multiply quickly 40 by 60 very quickly without using a calculator? 

I did it in one moment 2400! 

What did I do to find the multiplication so quickly?

Well, both 40 and 60 are multiples of 10 and there is a special way to find such multiplications.

Just multiply the non zero numbers and include the same number of zeros with your answer.

So, to multiply 40 by 60, I just found 4 x 6 which is 24 and included two zeros (one from each 40 and 60) to get 2400 as my answer. 

Easy! isn't it?

Below are the activity sheets with explanations including a small group of problems to solve;

Below are the links to 2nd grade and 3rd grade math pages, where you can print all the content for 2nd and 3rd grade math students;

2ND GRADE MATH CORE CURRICULUM

3RD GRADE MATH CORE CURRICULUM