Question

example
compare 217 and 234.
217 = 2 hundreds + 1 ten + 7 ones
234 = 2 hundreds + 3 tens + 4 ones
the hundreds are the same.
compare the tens.
1 ten is less than 3 tens.
217 < 234
cam has 482 marbles. joe has
439 marbles.
1 how many hundreds, tens, and ones are in each number?
482 = ____ hundreds __ tens ____ ones
439 = ____ hundreds __ tens ____ ones
2 the hundreds are the same. compare the tens.
____ tens is greater than ____ tens.
3 complete the number sentence.
____ > ____
4 use the same numbers as problem 3. write a different
number sentence.
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lesson 12 compare three - digit numbers 121

Explanation:

Sub - Question 1

Step 1: Analyze 482

A three - digit number \(abc\) (where \(a\) is the hundreds digit, \(b\) is the tens digit, and \(c\) is the ones digit) can be written as \(a\times100 + b\times10 + c\times1\). For 482, the hundreds digit is 4, the tens digit is 8, and the ones digit is 2. So \(482 = 4\) hundreds \(8\) tens \(2\) ones.

Step 2: Analyze 439

For 439, the hundreds digit is 4, the tens digit is 3, and the ones digit is 9. So \(439 = 4\) hundreds \(3\) tens \(9\) ones.

Step 1: Identify the tens digits

From the previous question, the tens digit of 482 is 8 and the tens digit of 439 is 3.

Step 2: Compare the tens digits

We know that \(8>3\), so 8 tens is greater than 3 tens.

Step 1: Recall the comparison of 482 and 439

We found that the hundreds digits are the same (both 4), and the tens digit of 482 (8) is greater than the tens digit of 439 (3). So \(482>439\).

Answer:

\(482=\boldsymbol{4}\) hundreds \(\boldsymbol{8}\) tens \(\boldsymbol{2}\) ones
\(439=\boldsymbol{4}\) hundreds \(\boldsymbol{3}\) tens \(\boldsymbol{9}\) ones

Sub - Question 2