Three-Digit Place Value — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Order 214, 124, 241 from least to greatest. The smallest is 124.
124 has 1 hundred, while 214 and 241 each have 2 hundreds, so 124 is the smallest.
2. Order 305, 350, 503 from least to greatest. The middle number is 350.
305 is the smallest and 503 is the largest, leaving 350 in the middle of the three.
3. Order 612, 621, 216 from least to greatest. The largest is 621.
612 and 621 both have 6 hundreds, but 621 has 2 tens and 612 has 1 ten, so 621 is largest.
4. Order 480, 408, 840 from least to greatest. The smallest is 408.
408 and 480 both start with 4 hundreds, but 408 has 0 tens while 480 has 8 tens, so 408 is smallest.
5. In order from least to greatest: 150, 105, 510. The second number is 150.
105 is smallest, 510 is largest, so 150 sits in the middle position.
6. In order from least to greatest: 732, 273, 327. The largest is 732.
732 has 7 hundreds, while 273 has 2 and 327 has 3, so 732 is the greatest.
7. Order 199, 919, 991 from least to greatest. The smallest is 199.
199 has 1 hundred, while 919 and 991 each have 9 hundreds, so 199 is smallest.
8. In order from least to greatest: 608, 680, 806. The second number is 680.
608 is smallest and 806 is largest, so 680 sits in the middle of the three.
9. Order 345, 354, 435 from least to greatest. The largest is 435.
435 has 4 hundreds while 345 and 354 each have 3 hundreds, so 435 is the greatest.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
210, 120, 201
→ Smallest is 120
Smallest is 120
530, 305, 350
→ Smallest is 305
Smallest is 305
486, 648, 864
→ Largest is 864
Largest is 864
702, 720, 270
→ Largest is 720
Largest is 720
Place value comparison finds one correct smallest or largest number for each set of three-digit numbers.