Hundreds, tens and ones · sheet 4 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 3 hundreds, 10 tens, 5 ones | 405 | 3105 the unit never changes when you regroup |
| 2 | 7 hundreds, 2 tens, 9 ones | 729 | 18 a digit's value is its face value |
| 3 | 4 hundreds, 1 ten, 4 ones | 414 | 9 a digit's value is its face value |
| 4 | 6 hundreds, 6 tens, 0 ones | 660 | 12 a digit's value is its face value |
| 5 | 4 hundreds, 9 tens, 5 ones | 495 | 18 a digit's value is its face value |
| 6 | 4 hundreds, 3 tens, 0 ones | 430 | 7 a digit's value is its face value |
| 7 | 9 hundreds, 0 tens, 3 ones | 903 | 12 a digit's value is its face value |
| 8 | 3 hundreds, 14 tens, 7 ones | 447 | 3147 the unit never changes when you regroup |
| 9 | 2 hundreds, 0 tens, 8 ones | 208 | 10 a digit's value is its face value |
| 10 | 7 hundreds, 11 tens, 8 ones | 818 | 7118 the unit never changes when you regroup |
| 11 | 5 hundreds, 14 tens, 3 ones | 643 | 5143 the unit never changes when you regroup |
| 12 | 1 hundred, 0 tens, 6 ones | 106 | 7 a digit's value is its face value |
| 13 | 6 hundreds, 3 tens, 6 ones | 636 | 15 a digit's value is its face value |
| 14 | 6 hundreds, 2 tens, 0 ones | 620 | 8 a digit's value is its face value |
| 15 | 7 hundreds, 5 tens, 7 ones | 757 | 19 a digit's value is its face value |
| 16 | 7 hundreds, 5 tens, 0 ones | 750 | 12 a digit's value is its face value |
| 17 | 7 hundreds, 0 tens, 5 ones | 705 | 12 a digit's value is its face value |
| 18 | 9 hundreds, 1 ten, 7 ones | 917 | 17 a digit's value is its face value |
| 19 | 5 hundreds, 10 tens, 5 ones | 605 | 5105 the unit never changes when you regroup |
| 20 | 8 hundreds, 13 tens, 1 one | 931 | 8131 the unit never changes when you regroup |
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.