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Decimals 1: Adding and Subtracting
8.79 + 4.36 = ?

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It's unusual to do decimals before fractions, but I feel decimals are both conceptually simpler, and help people understand the purpose of fractions. I don't feel like I fully understood fractions until after I had learned decimals.

This focuses on basic addition and subtraction with decimals. The second number will always be smaller than the first.

Version: 1.1.5