Place Value Chart: Writing 640 in Hundreds, Tens, and Units

Q: Why is there a 0 in the units place for 640?

The zero shows there are no individual units (ones). In 640, we have 6 hundreds and 4 tens, but zero units. The zero is important - without it, we'd have 64, not 640!

Q: How do I know which column is which?

Place value columns go from right to left: units (ones), tens, hundreds. Think of it like this - the rightmost column is always units, then tens to its left, then hundreds to the left of tens.

Q: What if I mix up the hundreds and tens places?

A great way to remember: hundreds are bigger than tens, so they go in the leftmost column. For 640, ask yourself: "Which is bigger, 600 or 40?" The bigger value (600) goes in the leftmost position.

Q: Can I write 640 as just 64 in the chart?

No! You must fill all three columns. Writing 64 would mean sixty-four, not six hundred forty. The zero in the units place is crucial - it shows there are no extra ones beyond the hundreds and tens.

Q: How do I read numbers from a place value chart?

Read from left to right: hundreds first, then tens, then units. So $ 6,4,0 $ becomes "6 hundreds, 4 tens, 0 units" which equals six hundred forty.

Place Value Understanding with Three-Digit Numbers

Write the number six hundred and forty in the place value chart below:

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Step-by-step written solution

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Understand the problem

Write the number six hundred and forty in the place value chart below:

Step-by-step solution

To solve this problem, we need to write the number six hundred and forty using a place value chart:

First, understand that the number six hundred and forty can be written as $640$ .
In a place value chart, each position represents a different power of ten. From the right, the first column is for units (ones), the second for tens, and the third for hundreds.

Let's fill in the chart:

Step 1: Identify the hundreds place. The hundreds digit in the number $640$ is $6$ . Place $6$ in the hundreds column.
Step 2: Identify the tens place. The tens digit in the number $640$ is $4$ . Place $4$ in the tens column.
Step 3: Identify the units place. The units digit in the number $640$ is $0$ . Place $0$ in the units column.

Therefore, the representation of the number six hundred and forty in the place value chart is:

$6,4,0$

Upon evaluating the choices provided, the correct choice that matches our obtained result is:

Choice 2: $6,4,0$

Final Answer

$6,4,0$

Key Points to Remember

Essential concepts to master this topic

Place Value Rule: Each position represents a different power of ten
Technique: For 640, identify 6 hundreds, 4 tens, 0 units
Check: Verify by adding: 600 + 40 + 0 = 640 ✓

Common Mistakes

Avoid these frequent errors

Reading digits from left to right in place value charts
Don't write digits in the order you read them = wrong placement! Reading "six hundred forty" and writing 6-4-0 left to right ignores place value positions. Always identify what each digit represents first: 6 is hundreds, 4 is tens, 0 is units.

Practice Quiz

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What number do the blue squares below represent?

FAQ

Everything you need to know about this question

Why is there a 0 in the units place for 640?

The zero shows there are no individual units (ones). In 640, we have 6 hundreds and 4 tens, but zero units. The zero is important - without it, we'd have 64, not 640!

How do I know which column is which?

Place value columns go from right to left: units (ones), tens, hundreds. Think of it like this - the rightmost column is always units, then tens to its left, then hundreds to the left of tens.

What if I mix up the hundreds and tens places?

A great way to remember: hundreds are bigger than tens, so they go in the leftmost column. For 640, ask yourself: "Which is bigger, 600 or 40?" The bigger value (600) goes in the leftmost position.

Can I write 640 as just 64 in the chart?

No! You must fill all three columns. Writing 64 would mean sixty-four, not six hundred forty. The zero in the units place is crucial - it shows there are no extra ones beyond the hundreds and tens.

How do I read numbers from a place value chart?

Read from left to right: hundreds first, then tens, then units. So $6,4,0$ becomes "6 hundreds, 4 tens, 0 units" which equals six hundred forty.

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