Olympics Math Challenge 2 | Addition and Subtraction

 LI: To use the most efficient strategy to find the answers.

LI: To use LS2 Maths Talk to dicuss strategies.

This week for Maths, we have been solving equations that were related to the Olympics.

The question:

The Olympic sport of gymnastics is judged with a point system. Nastia Liukin, an uneven bar champion scored a disappointing 16.725 in Beijing putting her in second place. Her opponent beat her by 0.001 of a point. The Bronze medal winner's score was a 14.975.

1. What was the Gold medal winners score?

2. By how much did Nastia score over the Bronze medalist?

The stradegy we used was addition and subtraction.

For the first question the Gold medal winners score was 16.726 because Nastia scored 16.725 and the gold medalist scored  0.001 more than Nastia. So we added 0.001 and 16.725, that gave us the score of the gold medalists. 

To see if our answers were correct we subtracted 16.726 to 0.001 which equalled to 16.725, and added 1.75 to 14.975 which equalled to 16.726. 

For the second question Nastia scored over 1.750 than the Bronze medalist because we subtracted the 14.975 (third place winner score) to 16.725 (second place winner score) which equal to 1.750. 

To see if the answer was correct, we added 1.750 to 14.975 that equals 16.725.