Hundreds, tens and ones · sheet 28 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 7 hundreds, 12 tens, 2 ones | 822 | 7122 the unit never changes when you regroup |
| 2 | 4 hundreds, 0 tens, 2 ones | 402 | 6 a digit's value is its face value |
| 3 | 5 hundreds, 4 tens, 0 ones | 540 | 9 a digit's value is its face value |
| 4 | 9 hundreds, 0 tens, 3 ones | 903 | 12 a digit's value is its face value |
| 5 | 8 hundreds, 12 tens, 8 ones | 928 | 8128 the unit never changes when you regroup |
| 6 | 6 hundreds, 3 tens, 0 ones | 630 | 9 a digit's value is its face value |
| 7 | 9 hundreds, 1 ten, 8 ones | 918 | 18 a digit's value is its face value |
| 8 | 6 hundreds, 6 tens, 0 ones | 660 | 12 a digit's value is its face value |
| 9 | 3 hundreds, 13 tens, 4 ones | 434 | 3134 the unit never changes when you regroup |
| 10 | 6 hundreds, 5 tens, 2 ones | 652 | 13 a digit's value is its face value |
| 11 | 1 hundred, 0 tens, 2 ones | 102 | 3 a digit's value is its face value |
| 12 | 1 hundred, 0 tens, 8 ones | 108 | 9 a digit's value is its face value |
| 13 | 4 hundreds, 4 tens, 9 ones | 449 | 17 a digit's value is its face value |
| 14 | 9 hundreds, 3 tens, 8 ones | 938 | 20 a digit's value is its face value |
| 15 | 2 hundreds, 11 tens, 2 ones | 312 | 2112 the unit never changes when you regroup |
| 16 | 9 hundreds, 3 tens, 5 ones | 935 | 17 a digit's value is its face value |
| 17 | 8 hundreds, 5 tens, 6 ones | 856 | 19 a digit's value is its face value |
| 18 | 3 hundreds, 11 tens, 3 ones | 413 | 3113 the unit never changes when you regroup |
| 19 | 6 hundreds, 14 tens, 6 ones | 746 | 6146 the unit never changes when you regroup |
| 20 | 7 hundreds, 5 tens, 0 ones | 750 | 12 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.