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3 decimal places', null], ['Activity on solve problems using different operators', null], ['Add and subtract decimals upto 2 decimal places', null], ['Add and subtract decimals upto 3 decimal places', null], ['Add and subtract numbers upto 4D', null], ['Add and subtract with same denominators using 2 squares', null], ['Add and subtract with same denominators using 3 squares', null], ['Addition and subtraction of two digit numbers', null], ['Addition and subtraction with related denominators', null], ['Activity1 on multiplication', null], ['Division of 2 decimal number by whole numbers', null], ['Activity on multiply and divide 3D with 2D', null], ['Activity on multiply and divide 4D with 1D', null], ['Multiplication of fractions', null], ['Multiplication of numbers by 2 and 3 digit numbers', null], ['Multiply and divide 1D place number by 10,100,1000', null], ['Multiply and divide 2D place number by whole numbers', null], ['Activity on multiplication', null], ['Activity on multiplication of numbers method1', null], ['Multipilcation and division of fractions', null], ['Division of a mixed number by a fraction', null], ['Decimal operations for add, subtract, multiply and divide', null], ['Division of a whole number by a fraction', null], ['Multiplication of a mixed fraction by another fraction', null], ['Multiplication of a mixed fraction by whole number', null], ['Subtract a fraction with same and different denominators', null], ['Same and different denominators', null], ['Two halves make one whole', null], ['Activity1 on addition of two digit numbers', null], ['Activity2 on addition of two digit numbers', null], ], ['Estimation ', null, ['Example1 on round off significant figures', null], ['Example1 on significant figures', null], ['Example2 on round off significant figures', null], ['Example2 on significant figures', null], ['Example3 on round off significant figures', null], ['Example4 on round off significant figures', null], ['Example5 on round off significant figures', null], ['Example4 on significant figures', null], ['Activity on round off decimal to tenths place', null], ['Activity on round off numbers having 6D', null], ['Activity on round off numbers to hundreds place', null], ['Activity on round off numbers to thousands place', null], ['Activity on round off to nearest 2 decimal places', null], ['Round off 5D numbers to its nearest hundreds', null], ['Round off 5D numbers to its nearest tens', null], ['Round off numbers having 6D', null], ['Round off to nearest 2 decimal places', null], ['Round off to nearest whole number and tenths place', null], ], ['Limits of accuracy ', null, ['Activity on conversion of numbers 1', null], ], ['Ratio, proportion, rate ', null, ['Example of ratio 1', null], ['Example of ratio 2', null], ['Inverse proportion', null], ['Speed', null], ['Volume and rate of an object', null], ['Activity2 on problems based on measurements', null], ['Activity1 on problems based on measurements', null], 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['Rotation', null], ['Enlargement of triangle', null], ['Enlargement with out graph', null], ['Enlargement of triangles', null], ], ] ];