Comparing numbers and decimals · sheet 19 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 0.5 ○ 0.21 | > | < the longer decimal is bigger |
| 2 | 0.2 ○ 0.20 | = | < the longer decimal is bigger> the shorter decimal is bigger |
| 3 | 0.3 ○ 0.33 | < | > the shorter decimal is bigger |
| 4 | 0.7 ○ 0.70 | = | < the longer decimal is bigger> the shorter decimal is bigger |
| 5 | 0.90 ○ 0.20 | > | no pattern to catch here |
| 6 | 964 ○ 476 | > | < comparing numbers by the ones digit first |
| 7 | 804 ○ 794 | > | no pattern to catch here |
| 8 | 519 ○ 516 | > | no pattern to catch here |
| 9 | 853 ○ 128 | > | < comparing numbers by the ones digit first |
| 10 | 855 ○ 871 | < | > comparing numbers by the ones digit first |
| 11 | 825 ○ 519 | > | < comparing numbers by the ones digit first |
| 12 | 932 ○ 242 | > | no pattern to catch here |
| 13 | 358 ○ 877 | < | > comparing numbers by the ones digit first |
| 14 | 156 ○ 154 | > | no pattern to catch here |
| 15 | 0.31 ○ 0.2 | > | < the shorter decimal is bigger |
| 16 | 0.98 ○ 0.15 | > | no pattern to catch here |
| 17 | 100 ○ 148 | < | no pattern to catch here |
| 18 | 0.3 ○ 0.21 | > | < the longer decimal is bigger |
| 19 | 941 ○ 271 | > | no pattern to catch here |
| 20 | 217 ○ 221 | < | > 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.