Students multiply and divide decimals by powers of 10 in this festive winter math activity that doubles as classroom décor. Students multiply decimals by 0.01, 0.1, 10, 100, 1000 and divide decimals by 10, 100 and 1000. 100 and 1000 are expressed as 10^2 and 10^3 in ornaments #25-#44. Ornaments #45-