7.5 + 9.2 = 16.7
So 16.7 is reasonable.
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You should not have to perform the addition in order to decide whether an estimate
was reasonable. That defeats the whole purpose of the estimating process.
Ignore the decimal parts of your two numbers, and you have (7 + 9). You don't need
a calculator to know immediately that THAT sum is 16. So 16 is a good estimate for
what you'll have when you glue the decimal bits back onto the whole numbers, and
when you reassemble everything and get a sum of 16.7 , that's so near your estimate
that you can be pretty sure that you added correctly.
The sum of 17 and 75 is 92.
To find the average of the numbers 88, 75, 92, and 85, first add them together: 88 + 75 + 92 + 85 = 340. Then, divide the sum by the number of values, which is 4: 340 ÷ 4 = 85. Therefore, the average is 85.
92% of 75 = 92% * 75 = 0.92 * 75 = 69
75 percent of 92 is .75*92 or 69.
A reasonable answer for 92 times 98 is 9,016. That is also the correct answer.
The sum of 17 and 75 is 92.
To find the average of the numbers 88, 75, 92, and 85, first add them together: 88 + 75 + 92 + 85 = 340. Then, divide the sum by the number of values, which is 4: 340 ÷ 4 = 85. Therefore, the average is 85.
The sum of 92 and nothing is 92
92% of 75 = 92% * 75 = 0.92 * 75 = 69
75 percent of 92 is .75*92 or 69.
A reasonable answer for 92 times 98 is 9,016. That is also the correct answer.
To find the mean of the numbers 80, 92, 91, 75, 89, 84, 0, 85, and 78, first add them together: 80 + 92 + 91 + 75 + 89 + 84 + 0 + 85 + 78 = 600. Then, divide the sum by the number of values, which is 9. The mean is 600 ÷ 9 = 66.67.
Well, honey, if you wanna estimate the sum of 17 and 75, you could round them both to the nearest ten. So, 17 rounds up to 20 and 75 rounds down to 70. Add those together and you get a rough estimate of 90. But hey, who needs estimates when you can just do the math and get the exact sum of 92?
92 - 41 = 51, then add 75, 75 + 51 = 126
91% to 92% 91.6167665%
92%
69