Hundreds, tens and ones · sheet 7 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 6 hundreds, 10 tens, 0 ones | 700 | 6100 the unit never changes when you regroup |
| 2 | 2 hundreds, 5 tens, 0 ones | 250 | 7 a digit's value is its face value |
| 3 | 9 hundreds, 4 tens, 2 ones | 942 | 15 a digit's value is its face value |
| 4 | 3 hundreds, 13 tens, 6 ones | 436 | 3136 the unit never changes when you regroup |
| 5 | 8 hundreds, 4 tens, 1 one | 841 | 13 a digit's value is its face value |
| 6 | 9 hundreds, 0 tens, 5 ones | 905 | 14 a digit's value is its face value |
| 7 | 3 hundreds, 12 tens, 7 ones | 427 | 3127 the unit never changes when you regroup |
| 8 | 9 hundreds, 9 tens, 0 ones | 990 | 18 a digit's value is its face value |
| 9 | 7 hundreds, 0 tens, 9 ones | 709 | 16 a digit's value is its face value |
| 10 | 2 hundreds, 11 tens, 2 ones | 312 | 2112 the unit never changes when you regroup |
| 11 | 7 hundreds, 14 tens, 7 ones | 847 | 7147 the unit never changes when you regroup |
| 12 | 6 hundreds, 4 tens, 7 ones | 647 | 17 a digit's value is its face value |
| 13 | 5 hundreds, 7 tens, 0 ones | 570 | 12 a digit's value is its face value |
| 14 | 6 hundreds, 11 tens, 9 ones | 719 | 6119 the unit never changes when you regroup |
| 15 | 5 hundreds, 4 tens, 0 ones | 540 | 9 a digit's value is its face value |
| 16 | 1 hundred, 0 tens, 4 ones | 104 | 5 a digit's value is its face value |
| 17 | 6 hundreds, 4 tens, 8 ones | 648 | 18 a digit's value is its face value |
| 18 | 9 hundreds, 8 tens, 9 ones | 989 | 26 a digit's value is its face value |
| 19 | 6 hundreds, 1 ten, 1 one | 611 | 8 a digit's value is its face value |
| 20 | 7 hundreds, 0 tens, 4 ones | 704 | 11 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.