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Chapter 1: Problem 18

Add. $$11+221+5$$

Short Answer

Expert verified
The sum is 237.

Step by step solution

01

Write down the numbers

List the numbers to be added: 11, 221, and 5.
02

Add the first two numbers

Start by adding the first two numbers: 11 + 221. Calculate: 11 + 221 = 232.
03

Add the result to the third number

Take the result from Step 2 and add the third number: 232 + 5. Calculate: 232 + 5 = 237.
04

Write the final sum

The sum of 11, 221, and 5 is 237.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

step by step addition
Understanding how to add numbers step by step is a fundamental skill in mathematics. It makes complex problems easier by breaking them into smaller, manageable parts. Let's take an example from the exercise given: adding 11, 221, and 5.

Start with listing the numbers like this:
11
221
5

We begin by adding the first two numbers:
11 + 221. This equals 232.

Next, take the result (232) and add the last number:
232 + 5 = 237.

Hence, the final sum is 237. By breaking it into steps, it's easier to follow and verify each part of the calculation.
addition of multiple numbers
Adding multiple numbers might look intimidating, but it's simple when approached correctly. Follow a systematic method and this process becomes straightforward.

**Group the Numbers:**
Group numbers in pairs to simplify the addition. In the example, 11, 221, and 5, we group 11 and 221 first.

**Add in Pairs:**
Add the first pair: 11 + 221 = 232.
Then, add the resulting number to the remaining number: 232 + 5 = 237.

**Verify Your Steps:**
Always take a moment to review each step to avoid mistakes. This step-by-step pairing makes sure you don't get overwhelmed by too many numbers at once.

By working in manageable chunks, addition becomes simple and error-free.
sum calculation for prealgebra
Prealgebra focuses on the basic arithmetic that prepares students for algebra. A key part of this is sum calculation. Let's walk through our example again:

Write the numbers in a vertical column:
  • 11
  • 221
  • 5

Now, add from left to right. Begin with the first two numbers:
11 + 221 = 232.

Finally, add the last number:
232 + 5 = 237.

**Why Is This Important?:**
Mastering these basics ensures a strong foundation for higher-level math. Understanding sum calculations in prealgebra helps in solving equations, understanding variables, and more advanced math concepts later on. Keeping sums simple and logical helps in reducing errors and improves accuracy.

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