Sumed or Summed: How To spell?

The word Sumed is misspelled against Summed, which is past tense of "Sum"

Summed has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings su & ed which should not be misspelled with single 'M'
Wrong Spelling:  su-m-ed 
Correct Spelling:  su-mm-ed 
Check more misspelled words of Summed to spell it correct.

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