Hundreds, tens and ones · sheet 21 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 7 hundreds, 15 tens, 1 one | 851 | 7151 the unit never changes when you regroup |
| 2 | 2 hundreds, 15 tens, 8 ones | 358 | 2158 the unit never changes when you regroup |
| 3 | 2 hundreds, 5 tens, 2 ones | 252 | 9 a digit's value is its face value |
| 4 | 4 hundreds, 4 tens, 0 ones | 440 | 8 a digit's value is its face value |
| 5 | 4 hundreds, 7 tens, 3 ones | 473 | 14 a digit's value is its face value |
| 6 | 6 hundreds, 8 tens, 0 ones | 680 | 14 a digit's value is its face value |
| 7 | 2 hundreds, 5 tens, 0 ones | 250 | 7 a digit's value is its face value |
| 8 | 4 hundreds, 0 tens, 4 ones | 404 | 8 a digit's value is its face value |
| 9 | 7 hundreds, 1 ten, 3 ones | 713 | 11 a digit's value is its face value |
| 10 | 4 hundreds, 0 tens, 6 ones | 406 | 10 a digit's value is its face value |
| 11 | 8 hundreds, 0 tens, 9 ones | 809 | 17 a digit's value is its face value |
| 12 | 4 hundreds, 10 tens, 3 ones | 503 | 4103 the unit never changes when you regroup |
| 13 | 5 hundreds, 3 tens, 0 ones | 530 | 8 a digit's value is its face value |
| 14 | 2 hundreds, 11 tens, 9 ones | 319 | 2119 the unit never changes when you regroup |
| 15 | 2 hundreds, 13 tens, 0 ones | 330 | 2130 the unit never changes when you regroup |
| 16 | 7 hundreds, 5 tens, 8 ones | 758 | 20 a digit's value is its face value |
| 17 | 9 hundreds, 2 tens, 4 ones | 924 | 15 a digit's value is its face value |
| 18 | 6 hundreds, 0 tens, 7 ones | 607 | 13 a digit's value is its face value |
| 19 | 2 hundreds, 12 tens, 3 ones | 323 | 2123 the unit never changes when you regroup |
| 20 | 3 hundreds, 1 ten, 4 ones | 314 | 8 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.