sčítanec znamená v angličtina

addend [addends]▼(any of various terms added together)
noun
[UK: ədˈend] [US: ədˈend]

addend [addends]▼(term added to another)
noun
[UK: ədˈend] [US: ədˈend]

summand▼(term of addition)
noun
[UK: sˈʌmand] [US: sˈʌmænd]