3. David participated in a marathon. On the first day he ran 23 km 345 m and
t the second day he ran 19 km 378 m. What is the total distance that he ran?
oives it to his fri
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Step-by-step explanation:
total distance:
first add km:
23 + 19 = 42km
then add m:
345 + 378 = 723m
total: 42km 723m
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