Practice with lots of printable resources - includes decimal/ fractions equivalent chart.
When working on decimals with your child you should discuss how decimals and fractions both can be used to represent the same thing - part of a whole. Your child should be familiar with the concept of fractions before tackling operations with decimals.
You will also find help for tutoring your children on decimals in the Place Value section where decimals including tenths, hundredths, and thousandths are discussed.
Note: Decimals are typically introduced in 4th Grade with tenths and hundredths.
All the pages noted above also include a listing of related decimal worksheets that can be used to help practice working with decimals. Select from the links above or use the menu options to choose the information and resources you wish.