
Basic addition and subtraction of fractions, no LCM required
Basic addition and subtraction of fractions without LCM students usually learn in 3rd, 4th grade.
This activity allow to master these skills.


Advanced addition and subtraction of fractions, LCM required
Advanced addition and subtraction of fractions requires finding the LCM of the denominators. It is important for the students
to master this skill.

Progress report
The report shows the learning progress in percentage (0%  not learned, 100%  learned perfectly).
There are three levels of the report.
Short report
Add, subtract with 1 and 1/2: 90%
Add and subtract fractions with different denominators, no LCM: 71%
Add and subtract fractions, LCM required: 94%
Normal report
Add, subtract with 1 and 1/2 
Subtract from 1  90% 
Subtract from 1/2  80% 
Addition to 1/2  100% 
Add, subtract fractions with different denominators, no LCM 
Add fractions (no LCM)  70% 
Subtract fractions (no LCM)  72% 
Add and subtract fractions, need to find LCM 
 82% 
 85% 
 77% 
 74% 
 70% 
 41% 
 29% 
 27% 
 26% 
Detail report
Addition and subtraction of fractions with 1 and 1/2.
Subtract from 1  90% 
Subtract from 1/2  80% 
Addition to 1/2  100% 
Addition of fractions with different denominators, no LCM.
 60% 
 80% 
 80% 
 20% 
 40% 
 80% 
 100% 
 100% 
 68% 
Subtraction of fractions with different denominators, no LCM.
 60% 
 80% 
 80% 
 20% 
 40% 
 80% 
 100% 
 100% 
 68% 
Addition and subtraction of fractions with different denominators. LCM required.
Hover the pointer over the grid chart to view the tooltip with the facts description.
 Perfectly correct answers 
 Need improvement 
 Totally incorrect answers 
 Never practiced 