Mathematics, 20.09.2020 03:01 leigha54
Iliana and Rod were asked to find the difference of (5.1 times 10 Superscript negative 15 Baseline) minus (2.3 times 10 Superscript negative 14 Baseline). As a first step, Iliana rewrote the problem as (0.51 times 10 Superscript negative 14 Baseline) minus (2.3 times 10 Superscript negative 14), and Rod rewrote the problem as (5.1 times 10 Superscript negative 15 Baseline) minus (0.23 times 10 Superscript negative 15 Baseline). Which person wrote a correct possible first step? Why? Both students are correct because both numbers have the same power of 10. Only Iliana is correct because Rod incorrectly equated 2.3 times 10 Superscript negative 14 and 0.23 times 10 Superscript negative 15. Only Rod is correct because Iliana incorrectly equated 5.1 times 10 Superscript negative 15 and 0.51 times 10 Superscript negative 14. Neither student is correct because the first step is to add the coefficients.
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Iliana and Rod were asked to find the difference of (5.1 times 10 Superscript negative 15 Baseline)...
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