Mathematics, 12.10.2020 07:01, Jorjalilli8786

rosie is evaluating the sum 3+7+12+8 and decides to add 3 and 7 together and 8 and 12 together before finally adding both results. which of the following allows her to do this initial grouping

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rosie is evaluating the sum 3+7+12+8 and decides to add 3 and 7 together and 8 and 12 together befor...