Chris wants to triple 63.374. He says it must end in 9. Is he correct? Explain your answer.

Question

apologiabiology · Answer

he is wrong. we are only looking at the last number which is 4 if we tripple 4 or 4*3 we get 12 which ends in 2, not 9

apologiabiology · Answer

Chris is wrong; tripling 63.374 will not end in 9. Instead, it will end in 2. This is because the last digit of 4, when tripled, results in 12, which ends in 2. 
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Chris wants to triple 63.374. He says it must end in 9. Is he correct? Explain your answer.

Answer (2)

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