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# Table 1 Arithmetic contents for each year of the primary school curriculum

Grade Content
1st Counting
Sequencing
Addition
Subtraction
2nd Counting
Sequencing
Addition
Subtraction
3rd Sequencing
Composition and decomposition
Four natural operations
4th Decimal numbers reported to the thousandth place
Composition 100.000
Four natural operations
Fractions: notions and comparison
5th Decimal numbers reported to the billionth place: comparison and sequencing
Four natural operations
Fractions: notions and comparison
Fractions and percentages
Fractions and decimal numbers
Arithmetic operations with fractions and natural numbers
Fractions: equivalence and simplification
Numerical expressions
6th Four natural operations
Comparison of decimal numbers
Fractional decimals
Fractions: order
Fractions: operations
Numerical expressions
7th Whole numbers: comparison
Whole numbers: addition and subtraction
Whole numbers: multiplication and division
Ratios and proportions
Percentages
Numerical expressions
8th Numerical expressions—rational numbers
Comparison and operations involving whole, rational, irrational, and real numbers
9th Comparison and operations involving whole, rational, irrational, and real numbers
Exponentiation: operations
Radicals: operations