Comparing numbers and decimals · sheet 6 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 684 ○ 345 | > | < comparing numbers by the ones digit first |
| 2 | 0.91 ○ 0.7 | > | < the shorter decimal is bigger |
| 3 | 0.84 ○ 0.7 | > | < the shorter decimal is bigger |
| 4 | 810 ○ 910 | < | no pattern to catch here |
| 5 | 328 ○ 498 | < | no pattern to catch here |
| 6 | 338 ○ 339 | < | no pattern to catch here |
| 7 | 0.3 ○ 0.30 | = | < the longer decimal is bigger> the shorter decimal is bigger |
| 8 | 0.3 ○ 0.21 | > | < the longer decimal is bigger |
| 9 | 526 ○ 289 | > | < comparing numbers by the ones digit first |
| 10 | 521 ○ 213 | > | < comparing numbers by the ones digit first |
| 11 | 0.4 ○ 0.26 | > | < the longer decimal is bigger |
| 12 | 0.30 ○ 0.3 | = | < the shorter decimal is bigger> the longer decimal is bigger |
| 13 | 344 ○ 352 | < | > comparing numbers by the ones digit first |
| 14 | 198 ○ 193 | > | no pattern to catch here |
| 15 | 0.97 ○ 0.25 | > | no pattern to catch here |
| 16 | 644 ○ 724 | < | no pattern to catch here |
| 17 | 589 ○ 592 | < | > comparing numbers by the ones digit first |
| 18 | 905 ○ 866 | > | < comparing numbers by the ones digit first |
| 19 | 0.65 ○ 0.64 | > | no pattern to catch here |
| 20 | 586 ○ 576 | > | no pattern to catch here |
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.