Remedial Math

I help my fifth-grader with her homework, which is sometimes Math. So far, I have always been able to help her, but it is providing a review of things I haven't thought about since I was a student.

Yesterday she had a problem of: A boy delivers 98 newspapers per week, how many does he deliver per year? Oh yes, solve the problem without multiplying. It took me a while, but here is how you do it: Divide 98 by 1/52. Dividing by the reciprocal of a number is the functional equivalent of multiplying by the number.