This is a 20-card game called "Which Is Greater," which not only helps students decide which of two decimals is greater, but also requires them to explain their thinking. Decimals are compared on the basis of like denominators (0.2 vs. 0.8), different denominators using equivalent parts (0.4 is more than 0.18, because 0.4 more than 0.1, and because 0.40 is more than 0.18), and based on their relationship to 1/2 (0.6 is more than 0.25 because 0.6 is over half and 0.25 is less than 1/2). Card backs provide correct answers as well as pictures and detailed explanations of various possible reasonings. You can use just the first 16 cards or include the last 4 cards which involve wholes as well. Templates for printing cards are included as well as an instruction sheet for students. Don't worry, the blue pictures print in greyscale beautifully without even changing print settings. Makes a great lesson or math center! Also check out my decimal clipart listing on Teachers Pay Teachers - I used it to make this game!
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