Comparing numbers and decimals · sheet 5 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 870 ○ 500 > no pattern to catch here
2 592 ○ 578 > < comparing numbers by the ones digit first
3 194 ○ 222 < > comparing numbers by the ones digit first
4 928 ○ 929 < no pattern to catch here
5 185 ○ 174 > no pattern to catch here
6 599 ○ 585 > no pattern to catch here
7 0.4 ○ 0.40 = < the longer decimal is bigger> the shorter decimal is bigger
8 638 ○ 639 < no pattern to catch here
9 883 ○ 693 > no pattern to catch here
10 0.3 ○ 0.26 > < the longer decimal is bigger
11 0.85 ○ 0.57 > no pattern to catch here
12 0.89 ○ 0.55 > no pattern to catch here
13 405 ○ 236 > < comparing numbers by the ones digit first
14 0.81 ○ 0.1 > < the shorter decimal is bigger
15 0.24 ○ 0.5 < > the longer decimal is bigger
16 0.2 ○ 0.20 = < the longer decimal is bigger> the shorter decimal is bigger
17 0.84 ○ 0.3 > < the shorter decimal is bigger
18 946 ○ 819 > < comparing numbers by the ones digit first
19 197 ○ 234 < > comparing numbers by the ones digit first
20 920 ○ 280 > 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.

Comparing numbers by the ones digit first 5 of 20 problems

The longer decimal is bigger 4 of 20 problems

The shorter decimal is bigger 4 of 20 problems