The table shows quiz marks out of 100 in each subject.   English Geography Mathematics Science Robert 84 82 88 47 Samuel 81 61 81 70 Thomas 60 51 84 83 1. How many marks did Thomas totally obtain in Mathematics and Science?   2. How many more marks does Robert need for a perfect score in Mathematics?   3. In Geography, how many more marks did Robert get than Samuel?   4. Find the difference between Robert's Science marks and Samuel's English marks.   5. The Mathematics teacher by mistake gave Thomas 3 times his actual marks. What are his actual marks?