# data[].attributes.body
So how you do the chimney sum is you have say 56 + 72 and instead you do 56+
72
128 But start with the lowest number

# data[].attributes.body
So how to do a rounding and compensation strategy you take an number like say 3x38 you would round the 38 to 40 which then would be 3x40=120-3x2=6-120=114 also if it is 32 you would round to 30 and if its 35 you would always round up

# data[].attributes.body
What you do is you take say 39+27 and then you round up 39 to 40 and take away that one from 27 to make that 26 and then you add them together and theres how you do the split strategy.

subtraction:
41-23
40-23=17
17+1= 18

# data[].attributes.body
The split strategy is where you take the tens and add them together and then take the ones and them together and then the tens and ones get added together.