Decimal Point Verification: Is 6.31 + 216.222 Correctly Written?

Decimal Alignment with Addition Setup

Determine whether the exercise is written correctly:

Is the position of the decimal point correct in each number?

6.31+216.222

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine if the decimal point position is correct?
00:04 We'll use long addition to find the point position
00:08 In long addition, the decimal points must be aligned one above the other
00:16 In our exercise, the decimal points are aligned one above the other
00:21 Therefore, the decimal point position is correct
00:24 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Determine whether the exercise is written correctly:

Is the position of the decimal point correct in each number?

6.31+216.222

2

Step-by-step solution

First let's fill the zeros in the empty space as follows:

006.310+216.222  006.310\\+216.222\\\

Here We should note that the decimal points are written one below the other.

Therefore, the exercise is written in the appropriate form.

3

Final Answer

Yes

Key Points to Remember

Essential concepts to master this topic
  • Rule: Decimal points must align vertically in addition problems
  • Technique: Add zeros to equalize decimal places: 6.310 + 216.222
  • Check: Verify decimal points form a straight vertical line ✓

Common Mistakes

Avoid these frequent errors
  • Misaligning decimal points when setting up addition
    Don't line up the last digits instead of decimal points = wrong place values! This makes 6.31 + 216.222 look like 631 + 216222 in your mind. Always align decimal points vertically first, then add zeros as needed.

Practice Quiz

Test your knowledge with interactive questions

\( \text{0.6+0}.5= \)

+=

FAQ

Everything you need to know about this question

Why do the decimal points need to line up exactly?

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Decimal points represent the same place value position in all numbers. When they align vertically, you're adding tenths to tenths, hundredths to hundredths, and so on!

What if the numbers have different amounts of decimal places?

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Add zeros to the right of the shorter decimal to make them equal! For example, 6.31 becomes 6.310 so it matches 216.222's three decimal places.

Does it matter if I write the bigger number on top?

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Not for the math, but it's easier to read when the longer number goes on bottom. The most important thing is keeping those decimal points aligned!

How can I tell if my setup is correct?

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Use a ruler or straight edge to check! The decimal points should form a perfectly straight vertical line. Also count that all numbers have the same amount of decimal places.

What happens if I don't align the decimal points?

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You'll get the wrong answer! Misaligned decimals mean you're adding wrong place values together, like adding hundreds to ones instead of ones to ones.

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