Hundreds, tens and ones · sheet 3 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 9 hundreds, 3 tens, 0 ones | 930 | 12 a digit's value is its face value |
| 2 | 6 hundreds, 12 tens, 0 ones | 720 | 6120 the unit never changes when you regroup |
| 3 | 3 hundreds, 8 tens, 6 ones | 386 | 17 a digit's value is its face value |
| 4 | 9 hundreds, 5 tens, 4 ones | 954 | 18 a digit's value is its face value |
| 5 | 2 hundreds, 9 tens, 0 ones | 290 | 11 a digit's value is its face value |
| 6 | 6 hundreds, 15 tens, 6 ones | 756 | 6156 the unit never changes when you regroup |
| 7 | 7 hundreds, 10 tens, 3 ones | 803 | 7103 the unit never changes when you regroup |
| 8 | 2 hundreds, 11 tens, 0 ones | 310 | 2110 the unit never changes when you regroup |
| 9 | 4 hundreds, 0 tens, 1 one | 401 | 5 a digit's value is its face value |
| 10 | 7 hundreds, 3 tens, 7 ones | 737 | 17 a digit's value is its face value |
| 11 | 1 hundred, 10 tens, 3 ones | 203 | 1103 the unit never changes when you regroup |
| 12 | 7 hundreds, 10 tens, 1 one | 801 | 7101 the unit never changes when you regroup |
| 13 | 8 hundreds, 0 tens, 9 ones | 809 | 17 a digit's value is its face value |
| 14 | 8 hundreds, 8 tens, 2 ones | 882 | 18 a digit's value is its face value |
| 15 | 7 hundreds, 0 tens, 4 ones | 704 | 11 a digit's value is its face value |
| 16 | 4 hundreds, 0 tens, 5 ones | 405 | 9 a digit's value is its face value |
| 17 | 1 hundred, 9 tens, 0 ones | 190 | 10 a digit's value is its face value |
| 18 | 3 hundreds, 9 tens, 9 ones | 399 | 21 a digit's value is its face value |
| 19 | 1 hundred, 8 tens, 8 ones | 188 | 17 a digit's value is its face value |
| 20 | 5 hundreds, 5 tens, 0 ones | 550 | 10 a digit's value is its face value |
Reading the wrong answers
One wrong answer is a slip. The same pattern on three or more problems is a rule your child is following, and it has a name and a fix. Problems marked "no pattern to catch" are the plain ones; a child who gets only those right is telling you something too.