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People's education publishing house, fourth grade primary school mathematics, volume 2
The second volume of the fourth grade

Unit 1 Four Operations: Four Operations Without Parentheses Four Operations With Parentheses About 0

Unit 2 position and direction: 1, position and direction 2, position and direction 3, position and direction.

Unit 3 Operation Law and Simple Calculation: 1, additive commutative law 2, addition and association law 3, multiplication and conversion law and association law 4, multiplication and distribution law 5, subtraction operation property 6, division operation property 7, simple calculation of multiplication.

Unit 4 Meaning and Properties of Decimals: 1, Meaning of Decimals 2, Reading of Decimals 3, Writing of Decimals 4, Properties of Decimals 5, Comparison of Decimals 6, Movement of Decimals 7, Decimals 8 in Life, Finding the Approximate Number of Decimals.

Unit 5 Triangle: The classification of triangle's characteristics The combination of the triangle's inner angle and figure.

Unit 6 Decimal addition and subtraction: 1, Decimal addition and subtraction (1) 2, Decimal addition and subtraction (2) 3, Decimal addition and subtraction (3)

Unit 7 Statistics

Unit 8 Mathematical Wide Angle: 1, Mathematical Wide Angle (1) 2, Mathematical Wide Angle (2) 3, Mathematical Wide Angle (3)

Unit 9 General Review