a) FIRST - please make sure you can multiply and divide by powers of 10
b) Making sure Questions https://www.mathgames.com/skill/6.46-multiply-and-divide-decimals-by-powers-of-ten
c) https://jeopardylabs.com/play/multiplying-and-dividing-by-powers-of-ten
http://www.sheppardsoftware.com/mathgames/measurement/MeasurementMeters.htm
3) https://goo.gl/Q0oIkJ - changing units of length
4) IXL Comparing and converting units of LENGTH
Level E O5 , Level F J3 , Level G T2 , Level D S9 (word problems)
5) Pink Booklet page 4-5 Sections E and F