Use front-end rounding to estimate the difference: $9,042 - 789$
A) 7,200
B) 8,300
C) 8,200
D) 7,300

Question

Quizplus · Accepted Answer

When using front-end rounding, we look at the leftmost digit of the numbers being subtracted. In this case, the leftmost digit of 9,042 is 9 and the leftmost digit of 789 is 7. We then round 9,042 to the nearest hundred (since the next digit after the hundreds place is 4, which is less than 5) and 789 to the nearest hundred (since the next digit after the hundreds place is less than 5), which gives us 9,000 - 800. Subtracting 800 from 9,000 gives us an estimate of 8,200, which is closest to choice C.

Use Front-End Rounding to Estimate the Difference 9,042−7899,042 - 7899,042−789 A) 7,200 B) 8,300 C) 8,200 D) 7,300

Use Front-End Rounding to Estimate the Difference $9,042 - 789$ A) 7,200
B) 8,300
C) 8,200
D) 7,300