Three-Digit Place Value — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The expanded form of 345 is 300 + 40 + 5.
345 has 3 hundreds, 4 tens, and 5 ones, so the ones part is 5.
2. The expanded form of 672 is 600 + 70 + 2.
The 6 in 672 is in the hundreds place, so it stands for 6 times 100, or 600.
3. The expanded form of 219 is 200 + 10 + 9.
The 1 in 219 is in the tens place, so it means 1 group of ten, which is 10.
4. 400 + 80 + 3 equals 483 in standard form.
400 plus 80 plus 3 equals 483, with 4 hundreds, 8 tens, and 3 ones.
5. 500 + 20 + 7 equals 527 in standard form.
5 hundreds, 2 tens, and 7 ones together make the number 527.
6. The expanded form of 806 is 800 + 0 + 6.
806 has 8 hundreds, 0 tens, and 6 ones, so the ones value is 6.
7. The expanded form of 150 is 100 + 50 + 0.
150 is made of 1 hundred, 5 tens, and 0 ones, so the hundreds part equals 100.
8. 700 + 40 + 0 equals 740 in standard form.
7 hundreds plus 4 tens plus 0 ones combines to make 740.
9. The expanded form of 999 is 900 + 90 + 9.
999 has 9 hundreds, 9 tens, and 9 ones, so the final value is 9.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
284
→ 200 + 80 + 4
500 + 10 + 7
365
→ 300 + 60 + 5
200 + 80 + 4
517
→ 500 + 10 + 7
600 + 20 + 0
620
→ 600 + 20 + 0
300 + 60 + 5
Every three-digit number has one correct expanded form based on its digits and their place values.