Comparing numbers and decimals · sheet 15 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 190 ○ 170 > no pattern to catch here
2 986 ○ 426 > no pattern to catch here
3 812 ○ 971 < > comparing numbers by the ones digit first
4 151 ○ 551 < no pattern to catch here
5 444 ○ 553 < > comparing numbers by the ones digit first
6 133 ○ 181 < > comparing numbers by the ones digit first
7 537 ○ 536 > no pattern to catch here
8 0.1 ○ 0.71 < > the shorter decimal is bigger
9 0.66 ○ 0.87 < no pattern to catch here
10 327 ○ 344 < > comparing numbers by the ones digit first
11 0.7 ○ 0.58 > < the longer decimal is bigger
12 767 ○ 912 < > comparing numbers by the ones digit first
13 0.80 ○ 0.8 = < the shorter decimal is bigger> the longer decimal is bigger
14 358 ○ 352 > no pattern to catch here
15 0.22 ○ 0.4 < > the longer decimal is bigger
16 540 ○ 170 > no pattern to catch here
17 0.89 ○ 0.10 > no pattern to catch here
18 0.20 ○ 0.2 = < the shorter decimal is bigger> the longer decimal is bigger
19 0.3 ○ 0.43 < > the shorter decimal is bigger
20 119 ○ 274 < > 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.

Comparing numbers by the ones digit first 6 of 20 problems

The longer decimal is bigger 4 of 20 problems

The shorter decimal is bigger 4 of 20 problems