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I have found the EiE table fine to work with as is but go with what you find best.
For the mortar I have gone back to my original calcs and revised them:
Blocks SA= 0.45x 0.25 = 0.1125m2 1m2 = 1/0.1125 = 9 + 2 for wastage/corners etc
Assuming bed depth now of 20mm mortar on 2 sides of each block = 0.15 x (0.45+0.225) = 0.10125m2 for each block + 10% wastage = 0.111375m2
20mm bed gives 0.111375x 0.02 = 0.0022275 per block - I had a decimal point wrong here - I apologise I hope it hasn't messed up your calculations
For 10m2 of wall - 110 blocks 0.245m3 of mortar
0.245m3 of mortar at 1:5 gives 0.049m3 (50 litres) of cement and 0.245 m3 of sand
50 litres of cement is 1 1/2 bags
Regards Toby Gould