Comparing Three-Digit Numbers — Answer Key
Part A: Sort the Words
Sort each word or number into the correct category box.
1. Sort each pair as < or >.
First number is smaller (<)
234 vs 456156 vs 623412 vs 834 First number is bigger (>)
789 vs 321547 vs 298705 vs 389 When hundreds are different, the tens and ones do not matter for the comparison.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. 234 < 456
2 hundreds is less than 4 hundreds, so 234 is smaller.
2. 789 > 321
7 hundreds is more than 3 hundreds, so 789 is bigger.
3. 156 < 623
156 has 1 hundred but 623 has 6 hundreds, so 156 is less.
4. 547 > 298
5 hundreds beats 2 hundreds, so 547 is greater than 298.
5. 412 < 834
4 hundreds is fewer than 8 hundreds, so 412 < 834.
Part C: True or False?
Read each statement. Circle True or False.
1. 156 < 623 because 6 hundreds is more than 1 hundred.
True False
623 has more hundreds, so 156 is indeed less than 623.
2. 789 is less than 321.
True False
789 has 7 hundreds and 321 has only 3, so 789 is greater.
3. When hundreds are different, you do not need to check the ones.
True False
The hundreds place decides the answer when it is different.
4. 412 > 834.
True False
4 hundreds is less than 8 hundreds, so 412 is smaller, not bigger.