🌿 The Math Xone · Grade 4 · Multiply, Divide, Measure
Grade 4 maths, one door at a time.
Open a chapter door, read the concepts on the whiteboard, then walk the corridor and solve the questions to clear it. 17 doors in all.
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The Grade 4 doors
Each door is one chapter of the maths syllabus. Clear a door to earn stars; your stars are saved on this device.
Door 1
Place Value to 4,00,000
6-digit numbers use the Lakhs place in the Indian Number System
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Door 2
Comparing, Ordering & Rounding
More digits means a bigger number
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Door 3
Addition & Subtraction (Large Numbers)
Line up place values; work from the right
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Door 4
Multi-Digit Multiplication
Align numbers so the rightmost digits line up
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Door 5
Division with Remainders
D-M-S-B-R: Divide, Multiply, Subtract, Bring down, Repeat
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Door 6
Factors & Multiples
A factor divides a number exactly; a multiple is the times-table of a number
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Door 7
Equivalent Fractions
A fraction ab has a numerator (top) and a denominator (bottom)
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Door 8
Fraction Operations
With the same denominator, add/subtract only the numerators
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Door 9
Decimals (Tenths and Hundredths)
Tenths: first place after decimal point, denominator 10
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Door 10
Money
100 paise = ₹1; money is written with a decimal point (₹5.50)
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Door 11
Measurement Conversions
1 km = 1,000 m; 1 m = 100 cm
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Door 12
Area and Perimeter Formulas
Perimeter measures the distance AROUND the boundary of a shape
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Door 13
Time
A day has 24 hours; a.m
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Door 14
2D Shapes & Symmetry
A polygon is a closed shape with straight sides
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Door 15
Lines and Angles
Parallel lines: never meet, always same distance apart (like train tracks)
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Door 16
Line Plots with Fractions
A line plot shows data using X marks above a number line
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Door 17
Number Patterns
A growing pattern gets larger with each term
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Prefer to read first? Browse all the Grade 4 concepts, or check your progress.