Today, we were looking at how we could solve an equation and check if the answer is correct. The questions were "In total, how many meters did Michael swim for his gold medals?" and "Finally, how many strokes did Michael have to take in total for all of his events combined if Michael can propel himself 2 meters with each stroke?". To answer the first question, we gathered all of the data and added them together. 400 + 100 + 200 + 200 + 200 + 200 + 100 + 100 = 1500. Now to answer the second question, we gather our information. By reading the world problem, we can understand that with each stroke Micheal took, he had propelled himself 2 metres. With this information, we know to divide 1500 by 2. 1500 ÷ 2 = 750. In order to check if the answer is correct, we can add 750, twice. 750 + 750 = 1500. Another way is to multiply 750 by 2 which will give us 1500. Reversing the equation to check if our answer is correct is an efficient strategy.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.