Natural numbers

• Sets 10
• Natural numbers 14
• The decimal system 16
• The binary system 21
• Roman numerals 24
• The number line 26
• Comparing numbers 28
• Rounding numbers 31
• Adding natural numbers 34
• Subtracting natural numbers 37
• Subtracting natural numbers 37
• Subtracting natural numbers 37
• Subtracting natural numbers 37
• Multiplying natural numbers 41
• Multiplying natural numbers 41
• Multiplying natural numbers 41
• Multiplying natural numbers 41
• Multiplication by 10, 100 and 1000 44
• Multiplication by 10, 100 and 1000 44
• Multiplication by 10, 100 and 1000 44
• Multiplication by 10, 100 and 1000 44
• Changes of the product 46
• Changes of the product 46
• Changes of the product 46
• Changes of the product 46
• Multi digit multiplication 48
• Multi digit multiplication 48
• Multi digit multiplication 48
• Multi digit multiplication 48
• Dividing natural numbers 50
• Dividing natural numbers 50
• Dividing natural numbers 50
• Dividing natural numbers 50
• Changes in the quotient 54
• Changes in the quotient 54
• Changes in the quotient 54
• Changes in the quotient 54
• Division by 10, 100 and 1000 56
• Division by 10, 100 and 1000 56
• Division by 10, 100 and 1000 56
• Division by 10, 100 and 1000 56
• Division by a multi digit divisior 58
• Division by a multi digit divisior 58
• Division by a multi digit divisior 58
• Division by a multi digit divisior 58
• Divisor and multiple 60
• Divisor and multiple 60
• Divisor and multiple 60
• Divisor and multiple 60
• The order of operations 62
• The order of operations 62
• The order of operations 62
• The order of operations 62
• Mixed exercises 65
• Mixed exercises 65
• Mixed exercises 65
• Mixed exercises 65

Geometry

Geometry

Geometry

Geometry

• Geometry 68
• Geometry 68
• Geometry 68
• Geometry 68
• The line and its parts 71
• The line and its parts 71
• The line and its parts 71
• The line and its parts 71
• The position of lines 74
• The position of lines 74
• The position of lines 74
• The position of lines 74
• Planes 78
• Planes 78
• Planes 78
• Planes 78
• Plane figures, polygons 80
• Plane figures, polygons 80
• Plane figures, polygons 80
• Plane figures, polygons 80
• The circle 84
• The circle 84
• The circle 84
• The circle 84
• Solids 88
• Solids 88
• Solids 88
• Solids 88
• Mixed exercises 91
• Mixed exercises 91
• Mixed exercises 91
• Mixed exercises 91

Measurement, statistics

Measurement, statistics

Measurement, statistics