Hundreds, tens and ones · sheet 20 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 4 hundreds, 9 tens, 7 ones | 497 | 20 a digit's value is its face value |
| 2 | 4 hundreds, 3 tens, 2 ones | 432 | 9 a digit's value is its face value |
| 3 | 9 hundreds, 0 tens, 9 ones | 909 | 18 a digit's value is its face value |
| 4 | 5 hundreds, 10 tens, 3 ones | 603 | 5103 the unit never changes when you regroup |
| 5 | 3 hundreds, 10 tens, 7 ones | 407 | 3107 the unit never changes when you regroup |
| 6 | 8 hundreds, 6 tens, 0 ones | 860 | 14 a digit's value is its face value |
| 7 | 5 hundreds, 8 tens, 2 ones | 582 | 15 a digit's value is its face value |
| 8 | 9 hundreds, 9 tens, 8 ones | 998 | 26 a digit's value is its face value |
| 9 | 8 hundreds, 15 tens, 5 ones | 955 | 8155 the unit never changes when you regroup |
| 10 | 4 hundreds, 0 tens, 2 ones | 402 | 6 a digit's value is its face value |
| 11 | 3 hundreds, 9 tens, 0 ones | 390 | 12 a digit's value is its face value |
| 12 | 1 hundred, 5 tens, 1 one | 151 | 7 a digit's value is its face value |
| 13 | 1 hundred, 1 ten, 0 ones | 110 | 2 a digit's value is its face value |
| 14 | 8 hundreds, 14 tens, 9 ones | 949 | 8149 the unit never changes when you regroup |
| 15 | 4 hundreds, 10 tens, 1 one | 501 | 4101 the unit never changes when you regroup |
| 16 | 9 hundreds, 3 tens, 9 ones | 939 | 21 a digit's value is its face value |
| 17 | 1 hundred, 7 tens, 0 ones | 170 | 8 a digit's value is its face value |
| 18 | 8 hundreds, 13 tens, 0 ones | 930 | 8130 the unit never changes when you regroup |
| 19 | 6 hundreds, 0 tens, 2 ones | 602 | 8 a digit's value is its face value |
| 20 | 1 hundred, 0 tens, 9 ones | 109 | 10 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.