Comparing Three-Digit Numbers — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which symbol makes this true? 234 ___ 243
A) <
B) >
C) =
D) +
3 tens is less than 4 tens, so 234 is smaller than 243.
2. Which number is the greatest?
A) 512
B) 521
C) 502
D) 499
521 has 5 hundreds and 2 tens, beating 512, 502, and 499.
3. Which symbol makes this true? 678 ___ 678
A) >
B) <
C) =
D) ?
Every place value matches, so the numbers are equal.
4. Which number is the smallest?
A) 345
B) 354
C) 435
D) 453
345 has the smallest hundreds digit paired with the smallest tens, so it is least.
Part B: Fill in the Blank
Write the correct answer on each line.
1. 347 < 374
4 tens is less than 7 tens, so 347 < 374.
2. 562 > 526
6 tens beats 2 tens, so 562 is greater than 526.
3. 819 = 819
Hundreds, tens, and ones all match, so the numbers are equal.
4. 246 < 642
2 hundreds is less than 6 hundreds, so 246 is much smaller.
5. 705 > 702
5 ones is more than 2 ones, so 705 > 702.