Add numerators, add denominators
1/2 + 1/3 = 2/5. The rule is invented because the idea of a common unit is missing.
Class 4 maths
Fractions get operations. Decimals appear. Area and perimeter start to be confused with each other. Multi-digit multiplication arrives. The syllabus speeds up; the gaps from Class 3 become visible.
Children who still see a fraction as a pizza slice cannot add 1/2 + 1/4 as numbers. Perimeter vs area is the other classic: they add when they should multiply, and nobody notices until a test.
Misconceptions
This is the section that should be citable: specific, ordered, and written from classroom pattern — not from a generic syllabus.
1/2 + 1/3 = 2/5. The rule is invented because the idea of a common unit is missing.
0.35 looks bigger than 0.4 because 35 > 4. Place value in tenths and hundredths is not secure.
They add all the sides for area, or multiply length and width for perimeter, depending on which word appeared last.
Three short ones. A live session has more, at the child’s pace.
Show 1/2 + 1/4 on a number line, then with a rectangle.
Same unit: quarters. The answer is a number, 3/4, not a drawing only.
Which is larger: 0.4 or 0.35? Prove it with a hundred-grid.
4 tenths vs 3 tenths and 5 hundredths.
A 6 by 4 rectangle: perimeter and area. What is different?
Distance around vs space inside. Two different quantities, two different units.
Average often means the gaps have not been named. A live session is ₹99 and 50 minutes. If everything is strong, you will see that too.
Pay ₹99 for a 50-minute class with a named tutor. Then decide whether regular lessons are the right next step.