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3 classes have 29 students each 2 classes have 28 students each how many zoo maps does keeper Christina need for all the students

Respuesta :

carianna505

Answer:

I think it might be 143 I could be wrong tho.

sqdancefan

9514 1404 393

Answer:

  143 maps

Step-by-step explanation:

The total number of students is ...

  3×29 + 2×28 = 87 +56 = 143

If each student gets a map, the number of maps needed is 143.

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Additional comment

You might be able to figure this in your head as ...

  3×29 +2×28 = 3×(28+1) +2×28 = 5×28 +3 = 140 +3 = 143

Or as ...

  3(30 -1) +2(30 -2) = 5(30) -3 -4 = 150 -7 = 143

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