Hundreds, tens and ones · sheet 26 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 4 hundreds, 1 ten, 0 ones | 410 | 5 a digit's value is its face value |
| 2 | 4 hundreds, 12 tens, 9 ones | 529 | 4129 the unit never changes when you regroup |
| 3 | 1 hundred, 15 tens, 5 ones | 255 | 1155 the unit never changes when you regroup |
| 4 | 7 hundreds, 14 tens, 9 ones | 849 | 7149 the unit never changes when you regroup |
| 5 | 5 hundreds, 0 tens, 7 ones | 507 | 12 a digit's value is its face value |
| 6 | 7 hundreds, 2 tens, 0 ones | 720 | 9 a digit's value is its face value |
| 7 | 8 hundreds, 12 tens, 1 one | 921 | 8121 the unit never changes when you regroup |
| 8 | 9 hundreds, 7 tens, 4 ones | 974 | 20 a digit's value is its face value |
| 9 | 7 hundreds, 13 tens, 2 ones | 832 | 7132 the unit never changes when you regroup |
| 10 | 9 hundreds, 1 ten, 3 ones | 913 | 13 a digit's value is its face value |
| 11 | 1 hundred, 4 tens, 1 one | 141 | 6 a digit's value is its face value |
| 12 | 3 hundreds, 4 tens, 0 ones | 340 | 7 a digit's value is its face value |
| 13 | 1 hundred, 0 tens, 7 ones | 107 | 8 a digit's value is its face value |
| 14 | 4 hundreds, 0 tens, 3 ones | 403 | 7 a digit's value is its face value |
| 15 | 4 hundreds, 7 tens, 2 ones | 472 | 13 a digit's value is its face value |
| 16 | 1 hundred, 2 tens, 4 ones | 124 | 7 a digit's value is its face value |
| 17 | 8 hundreds, 4 tens, 4 ones | 844 | 16 a digit's value is its face value |
| 18 | 5 hundreds, 0 tens, 4 ones | 504 | 9 a digit's value is its face value |
| 19 | 2 hundreds, 12 tens, 7 ones | 327 | 2127 the unit never changes when you regroup |
| 20 | 4 hundreds, 9 tens, 0 ones | 490 | 13 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.