Hundreds, tens and ones · sheet 2 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 2 hundreds, 7 tens, 5 ones | 275 | 14 a digit's value is its face value |
| 2 | 9 hundreds, 9 tens, 0 ones | 990 | 18 a digit's value is its face value |
| 3 | 3 hundreds, 6 tens, 8 ones | 368 | 17 a digit's value is its face value |
| 4 | 4 hundreds, 0 tens, 2 ones | 402 | 6 a digit's value is its face value |
| 5 | 6 hundreds, 11 tens, 8 ones | 718 | 6118 the unit never changes when you regroup |
| 6 | 8 hundreds, 15 tens, 9 ones | 959 | 8159 the unit never changes when you regroup |
| 7 | 5 hundreds, 14 tens, 4 ones | 644 | 5144 the unit never changes when you regroup |
| 8 | 4 hundreds, 3 tens, 0 ones | 430 | 7 a digit's value is its face value |
| 9 | 4 hundreds, 0 tens, 8 ones | 408 | 12 a digit's value is its face value |
| 10 | 7 hundreds, 7 tens, 3 ones | 773 | 17 a digit's value is its face value |
| 11 | 2 hundreds, 5 tens, 4 ones | 254 | 11 a digit's value is its face value |
| 12 | 8 hundreds, 2 tens, 5 ones | 825 | 15 a digit's value is its face value |
| 13 | 2 hundreds, 0 tens, 3 ones | 203 | 5 a digit's value is its face value |
| 14 | 3 hundreds, 3 tens, 0 ones | 330 | 6 a digit's value is its face value |
| 15 | 2 hundreds, 12 tens, 6 ones | 326 | 2126 the unit never changes when you regroup |
| 16 | 8 hundreds, 15 tens, 2 ones | 952 | 8152 the unit never changes when you regroup |
| 17 | 6 hundreds, 0 tens, 8 ones | 608 | 14 a digit's value is its face value |
| 18 | 5 hundreds, 10 tens, 0 ones | 600 | 5100 the unit never changes when you regroup |
| 19 | 9 hundreds, 4 tens, 9 ones | 949 | 22 a digit's value is its face value |
| 20 | 9 hundreds, 8 tens, 0 ones | 980 | 17 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.