LI: to use the most efficient strategy to answer the question.
Today we were looking at how we could solve an equation and prove that our answer is correct. We know that Nastia had came 2nd place by 0.001'ths of a second. Nastia's score was 16.725s and since we know that the 1st place medalist had won by 0.001'ths of a second, we can add 0.001 to Nastia's score which is 16.725. So to answer this question of "What was the gold medal winners score?" This gives us an answer of 16.726. To prove this answer is correct we can just subtract 0.001 from 16.726 which should give us the original answer (16.725).
To answer the next question, we use a subtraction algorithm. 00.005 - 00.005 = 00.000, 7 - 1 = 6, 00.12 - 00.07 = 00.05 6 - 1 = 5, 00.16 - 00.9 = 00.7, 5 - 4 = 1, 1 - 1 = 0, 1+ 00.7 + 00.05 = 1.75 and to prove that this answer is correct, we can reverse our strategy (subtraction) to the opposite (addition). 14.975 + 1.75 = 16.725.
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