Comparing numbers and decimals · sheet 1 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 318 ○ 406 | < | > comparing numbers by the ones digit first |
| 2 | 0.9 ○ 0.83 | > | < the longer decimal is bigger |
| 3 | 488 ○ 493 | < | > comparing numbers by the ones digit first |
| 4 | 0.74 ○ 0.7 | > | < the shorter decimal is bigger |
| 5 | 0.9 ○ 0.90 | = | < the longer decimal is bigger> the shorter decimal is bigger |
| 6 | 216 ○ 404 | < | > comparing numbers by the ones digit first |
| 7 | 0.31 ○ 0.4 | < | > the longer decimal is bigger |
| 8 | 0.8 ○ 0.91 | < | > the shorter decimal is bigger |
| 9 | 496 ○ 486 | > | no pattern to catch here |
| 10 | 659 ○ 797 | < | > comparing numbers by the ones digit first |
| 11 | 0.47 ○ 0.57 | < | no pattern to catch here |
| 12 | 333 ○ 173 | > | no pattern to catch here |
| 13 | 715 ○ 714 | > | no pattern to catch here |
| 14 | 0.90 ○ 0.9 | = | < the shorter decimal is bigger> the longer decimal is bigger |
| 15 | 648 ○ 649 | < | no pattern to catch here |
| 16 | 846 ○ 626 | > | no pattern to catch here |
| 17 | 0.54 ○ 0.95 | < | no pattern to catch here |
| 18 | 414 ○ 704 | < | no pattern to catch here |
| 19 | 837 ○ 848 | < | no pattern to catch here |
| 20 | 751 ○ 364 | > | < comparing numbers by the ones digit first |
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.