Three-Digit Place Value — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 3 flats, 4 rods, and 2 units show the number 342.
3 hundreds plus 4 tens plus 2 ones equals 300 + 40 + 2, which is 342.
2. 2 flats, 5 rods, and 6 units show the number 256.
2 flats equal 200, 5 rods equal 50, and 6 units equal 6, giving 256.
3. 5 flats, 0 rods, and 7 units show the number 507.
5 hundreds plus 0 tens plus 7 ones totals 507, with 0 filling the tens place.
4. The number 418 needs 4 flats, 1 rod, and 8 units.
418 has 4 hundreds, so you need 4 flats to show the hundreds value.
5. The number 263 needs 2 flats, 6 rods, and 3 units.
The 6 in 263 is in the tens place, so you need 6 rods to match it.
6. 7 flats, 3 rods, and 9 units show the number 739.
7 flats give 700, 3 rods give 30, and 9 units give 9, totaling 739.
7. The number 580 needs 5 flats, 8 rods, and 0 units.
580 has 0 ones, so no unit blocks are needed to show it.
8. 6 flats, 1 rod, and 4 units show the number 614.
6 flats equal 600, 1 rod equals 10, and 4 units equal 4, making 614.
9. The number 900 needs 9 flats, 0 rods, and 0 units.
900 is 9 hundreds, 0 tens, and 0 ones, so 9 flats alone show it.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
4 flats, 2 rods, 1 unit
→ 421
156
1 flat, 5 rods, 6 units
→ 156
703
7 flats, 0 rods, 3 units
→ 703
280
2 flats, 8 rods, 0 units
→ 280
421
Each flat is worth 100, each rod is worth 10, and each unit is worth 1, so totals come from simple addition.