@futurebird For me it's connected to my "most remembered" part of multiplication table -> 7*7. Then I just add one more 7 to the result.
It's not that much slower than having it remembered, so I never bothered to "optimize" it.
H
hazardius@hachyderm.io
@hazardius@hachyderm.io
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When you need to multiply 7*8 do you simply have it memorized, or do you need to add, subtract or otherwise connect it to another math fact that you know better?