Solution

152768

First name
mahema
School
west lodge primary school
Country
Age
11

In challenge 1 you have to times all the numbers together which is on the staircase shape and then you will get the answer which is the biggest total.
For the next question you have to find the lowest total to do that you have to times the 2 lowest numbers together. For the next question explain why the answer you got is the highest or the lowest total. For the last question you have to find the total of 75 using the numbers on the staircase shape.