To find the estimated sum of 1198 and 981 and round it off to the highest place value, you can follow these steps:
1. Add the two numbers: 1198 + 981 = 2179.
2. Identify the highest place value in the original numbers, which, in this case, is the thousands place as both numbers have a digit in the thousands place.
3. Round off the sum to the highest place value, which means rounding off to the nearest thousand. In this case, the sum 2179 is already rounded to the nearest thousand, so there is no need for further rounding.
Therefore, the estimated sum of 1198 and 981 rounded off to the highest place value is 2000 (option C).
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Answer:
To find the estimated sum of 1198 and 981 and round it off to the highest place value, you can follow these steps:
1. Add the two numbers: 1198 + 981 = 2179.
2. Identify the highest place value in the original numbers, which, in this case, is the thousands place as both numbers have a digit in the thousands place.
3. Round off the sum to the highest place value, which means rounding off to the nearest thousand. In this case, the sum 2179 is already rounded to the nearest thousand, so there is no need for further rounding.
Therefore, the estimated sum of 1198 and 981 rounded off to the highest place value is 2000 (option C).