Well I know how to multiply I just don't know how to estimate to get to my reasonable answer and some questions also use parentisis so does that mean I have another step to do.
"some questions also use parentisis"
parentheses are used to indicate multiplication, as in 3(4) = 12
or in algebra as, for example, to explain the distributive property: a(b+c) = ab + ac.
298(31) can be ESTIMATED AS 300(30), which you can do mentally--approximately 9,000.