Question

estimate 7879+215-16 by genral rule​

Answer 1

Step-by-step explanation:

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The correct answer could be

8078

Answer 2

Answer:

Every number will be estimated to its nearest tens place because all of the digits have tens place

• 7879 will become 7880
• 215 will become 220
• 16 will become 20

Performing the operation using new values

$\sf{7880 + 220 - 20 } \\ \sf{ 7880 + 200 = \: 8000 }$