Comparing numbers and decimals · sheet 20 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | 0.8 ○ 0.63 | > | < the longer decimal is bigger |
| 2 | 0.9 ○ 0.90 | = | < the longer decimal is bigger> the shorter decimal is bigger |
| 3 | 908 ○ 819 | > | < comparing numbers by the ones digit first |
| 4 | 375 ○ 311 | > | no pattern to catch here |
| 5 | 0.14 ○ 0.3 | < | > the longer decimal is bigger |
| 6 | 753 ○ 257 | > | < comparing numbers by the ones digit first |
| 7 | 0.90 ○ 0.9 | = | < the shorter decimal is bigger> the longer decimal is bigger |
| 8 | 0.67 ○ 0.2 | > | < the shorter decimal is bigger |
| 9 | 607 ○ 167 | > | no pattern to catch here |
| 10 | 690 ○ 672 | > | < comparing numbers by the ones digit first |
| 11 | 0.17 ○ 0.34 | < | no pattern to catch here |
| 12 | 798 ○ 760 | > | no pattern to catch here |
| 13 | 535 ○ 915 | < | no pattern to catch here |
| 14 | 181 ○ 189 | < | no pattern to catch here |
| 15 | 0.53 ○ 0.62 | < | no pattern to catch here |
| 16 | 489 ○ 808 | < | > comparing numbers by the ones digit first |
| 17 | 940 ○ 944 | < | no pattern to catch here |
| 18 | 448 ○ 668 | < | no pattern to catch here |
| 19 | 0.5 ○ 0.83 | < | > the shorter decimal is bigger |
| 20 | 938 ○ 809 | > | < 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.