Maths Stratergy Week 6 Term 4

1. The world record for throwing a cellphone in 2012 was 102.68 metres. James attempted to beat the record but only managed to throw 97.89m. How much was he short by? 97.89+___=102.68

97.89+2.11=100


100+2.68=102.68

2.11+2.68=4.79


So the equation was 97.89+___=102.68? The first thing I done was to round 97.89 to the nearest 100. So I added 2.11 to make it to 100. I needed to add another 2.68 which equals 102.68. So 2.11+2.68=4.79