Hundreds, tens and ones · sheet 1 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 6 hundreds, 14 tens, 4 ones | 744 | 6144 the unit never changes when you regroup |
| 2 | 3 hundreds, 10 tens, 2 ones | 402 | 3102 the unit never changes when you regroup |
| 3 | 9 hundreds, 6 tens, 8 ones | 968 | 23 a digit's value is its face value |
| 4 | 1 hundred, 4 tens, 3 ones | 143 | 8 a digit's value is its face value |
| 5 | 5 hundreds, 0 tens, 3 ones | 503 | 8 a digit's value is its face value |
| 6 | 6 hundreds, 5 tens, 8 ones | 658 | 19 a digit's value is its face value |
| 7 | 8 hundreds, 0 tens, 4 ones | 804 | 12 a digit's value is its face value |
| 8 | 5 hundreds, 6 tens, 3 ones | 563 | 14 a digit's value is its face value |
| 9 | 6 hundreds, 0 tens, 8 ones | 608 | 14 a digit's value is its face value |
| 10 | 5 hundreds, 10 tens, 9 ones | 609 | 5109 the unit never changes when you regroup |
| 11 | 2 hundreds, 8 tens, 0 ones | 280 | 10 a digit's value is its face value |
| 12 | 3 hundreds, 8 tens, 0 ones | 380 | 11 a digit's value is its face value |
| 13 | 8 hundreds, 2 tens, 0 ones | 820 | 10 a digit's value is its face value |
| 14 | 7 hundreds, 15 tens, 9 ones | 859 | 7159 the unit never changes when you regroup |
| 15 | 1 hundred, 4 tens, 2 ones | 142 | 7 a digit's value is its face value |
| 16 | 5 hundreds, 13 tens, 4 ones | 634 | 5134 the unit never changes when you regroup |
| 17 | 8 hundreds, 6 tens, 1 one | 861 | 15 a digit's value is its face value |
| 18 | 2 hundreds, 13 tens, 7 ones | 337 | 2137 the unit never changes when you regroup |
| 19 | 5 hundreds, 0 tens, 1 one | 501 | 6 a digit's value is its face value |
| 20 | 2 hundreds, 7 tens, 0 ones | 270 | 9 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.