Question

HOW TO DO THIS QUESTION PLEASE ​

Answer 1

9514 1404 393

Answer:

5

Explanation:

To estimate the quotient, round the numerator and denominator, then find the quotient of the rounded numbers.

(78 +69)/29 ≈ (80 +70)/30 = 150/30 = 5

A good estimate of the quotient is 5.

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Additional comment

IMO, an estimate should also be accompanied by an estimate of the error. Here, the numerator is increased by 3 units to get 150, so is about 3/147 ≈ 2% high. The denominator is increased by 1 unit to get 30, so causing the estimate to be approximately 1/29 ≈ 3.3% low. Overall, this means the estimate is on the order of 2% -3.3% = -1.3% from the actual value. That is, it is on the order of 1.3% low. (It is actually about 1.361% low.)

Answer 2

Try 5 first. If that is marked wrong, try 5.07

Explanation:

Estimate means put your calculator on the other side of the room. You are to do this in your head.

78 is nearly 80

69 is nearly 70

29 is nearly 30

So now do the question

80 + 70 = 150 because 8 and 7 = 15.

150 / 30 = 50 because 15/3 = 5

So the answer that should be right for this question should be 5

Let's see how close that is.

78 + 69 = 147

147 / 29 = 5.07