This site has many banners but lots of useful information. The glossary is well done. You can have answers to worksheets e-mailed to you if you supply your address. For this chapter, focus on the Word Problems in Arithmetic lessons under the subject of Arithmetic.
The Office of Arithmetic & Pre-Algebra on this site contains 14 useful lessons under Pre-Algebra. For this chapter, focus on the Word Problems component in the following lessons: