Describe how to round 678 to the nearest hundred

You first look at the last 2 digits of they are 49 or less then you round down removing those two digits and replacing them with zeros however if it's 50 or above you still replace the last two digits with zero and add one to the first digit leaving you with 700

Just look at the answer above it is correct

Multiply 9 and 67. then multiply 3 with 67. lastly the answer that you got for 9x67 is to be subtracted by the answer you got for 3x67