Some children are still finding dividind and multiplying decimals by 10,100 and a thousand difficult.Let's see if I can find some websites to help you practise
http://www.primaryresources.co.uk/maths/mathsC2c.htm lots of information on this page
http://www.ixl.com/math/practice/grade-5-round-decimals practise your rounding here
http://www.ixl.com/math/practice/grade-5-rounding
http://www.bbc.co.uk/skillswise/numbers/wholenumbers/multiplication/multiply10and100/quiz.shtml
hope these help
