SUMIF question... I think

Hello Excel experts (Bows down appreciatively)

I am very new to excel and am having difficulties with what I think must be quite a simple problem.

I am setting up a ledger for my joint account. I have money going in and out for various reasons and want to be able to reference amounts to various columns and generate running totals.

I have attached my excel sheet.

Basically, when I type 38 in the reference column (referring to my house number) and the amount in equals 607.75 I want the food total to add 100 dollars to the running total in the food column.

I thought I could do it with SUMIF but it's not playing ball!

Any help is greatly appreciated.