Final answer:
To estimate the answer by rounding each number (546 + 924) to 1 significant figure, we round 546 to 500 and 924 to 900, and then add them to get an estimated sum of 1400.
Step-by-step explanation:
Rounding means making a number simpler but keeping its value close to what it was.
In this case, to estimate the sum of 546 + 924 by rounding each number to 1 significant figure, we round 546 down to 500 and 924 up to 900 as these are the nearest numbers to the original numbers that contain only 1 significant figure.
Adding these together, we get:
- 500 (rounded from 546)
- +
- 900 (rounded from 924)
- = 1400
This estimated sum, 1400, is rounded to the nearest hundred as both original numbers are in the hundreds place, and we maintain that level of precision in our final answer.