Solution

162411

First name
Jasmine
School
Meavy Church of England primary school
Age
0

Easiest
42 + 3 = 45 (Easiest because you are only adding one digit)
42 + 18 = 60 (Second easiest because you can add up the tens, 40 + 10 +10)
42 + 47 = 89 (Third easiest because you can add up tens and ones easy, 40 + 40 + 9)
42 + 39 = 81 (Hardiest because 9 + 2 = 11 which goes over the tens, 40 + 30 + 11)
Hardest