doubles minus one | Wordsmyth Word Explorer Children's Dictionary; WILD dictionary K-2

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doubles minus one	in mathematics education, involving the addition of consecutive numbers by doubling the larger number and subtracting one.
minus sign	One action we do with numbers is to subtract one number from another number. An example of multiplying is "five minus three equals two." When we write this in numbers, we use something called a minus sign (-) between the first two numbers: 5 - 3. The minus sign tells us that what is going to happen with these two numbers is subtracting. Three is going to be taken away from five.

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