Respuesta :

Answer:

it would be 600 because if you round 18 you get 20 and if you round 31 you get 30. 30x20=600

Step-by-step explanation:

Answer:

I would say the answer is B) 600

Step-by-step explanation:

18 x 31 is 558

so 58 is above 50 thats why i would round it to 600

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