Answer:
600
Step-by-step explanation:
How to do it in your head (secret):
3*2 = 6
add 2 zeros after the 6 since there are 2 zeros in total in this equation 20 and 30 so:
30*20 = 600
:D
30*20= 600
When u do problems like this ignore the 0s and multiply the first number then add up the 0s at the end
