higher math

Four-year-old younger lad: "Mama, what's four plus four?"
me: "eight"

him: "What's eight plus eight?"
me: "16"

him: "What's 16 plus 16?"
me: "32"

him: "What's 32 plus 32?"
me: "64"

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him: "what's 512 plus 512?"
me: "1024?"

him: "is that how old you are?"
me: "no"