find the sum estimate to cheack if the answer is reasonable
What answer?
To estimate the sum of a series of numbers and check if the answer is reasonable, follow these steps:
1. Identify the numbers you want to add together.
2. Round each number to the nearest whole number or a convenient value.
3. Add the rounded numbers together to get an estimated sum.
4. Compare the estimated sum with the actual sum to check if it is reasonable.
Let's say we have the following numbers to find the sum: 45.2, 32.7, 19.6, and 13.3.
Step 1: Identify the numbers: 45.2, 32.7, 19.6, 13.3.
Step 2: Round each number to the nearest whole number: 45, 33, 20, 13.
Step 3: Add the rounded numbers together: 45 + 33 + 20 + 13 = 111.
Step 4: Compare the estimated sum (111) with the actual sum: 45.2 + 32.7 + 19.6 + 13.3 = 110.8.
In this case, the estimated sum (111) is reasonably close to the actual sum (110.8), so the answer seems reasonable.
To find the sum estimate and check if the answer is reasonable, you can follow these steps:
1. Start by adding the numbers in the sum. For instance, if you have the sum: 14 + 25 + 11 + 36, add each of these numbers together: 14 + 25 + 11 + 36 = 86.
2. Review the values in the sum and estimate their approximate values. Look for any patterns or familiar quantities that can help you make an educated guess. For example, if the sum consists of 4 two-digit numbers, you can estimate that the sum will likely be around the 100 mark.
3. Compare your estimation with the actual sum you calculated in step 1. In the above example, if your estimated sum was around 100 and the actual sum is 86, you can determine that your estimation was higher than the actual sum.
4. Consider the context of the problem. If you have a word problem or a real-life scenario related to the sum, think about whether the actual sum makes sense based on the context. For example, if you are adding up the prices of groceries in a shopping cart, a sum of $86 may be reasonable.
By following these steps, you can find the sum estimate and evaluate if the answer is reasonable based on your estimation and the context of the problem.