Operations with vulgar fractions Extension of a fraction. Cancellation of a fraction. Comparison of fractions. Reducing of fractions to a common denominator. Addition and subtraction of fractions. Multiplication of fractions. Division of fractions. Extension of a fraction. A fraction value isn’t changed, if to multiply its numerator and denominator by the same … [Read more...]

## Vulgar (simple) fractions

Vulgar (simple) fractions Vulgar fraction (denominator, numerator). Proper fraction. Improper fraction.Mixed number (integer and fractional parts). Converting of a mixed number into a vulgarimproper fraction and back. Reciprocal fractions. A part of a unit or some equal parts of a unit is called a vulgar (simple) fraction. A number of equal parts into which … [Read more...]

## Least common multiple

Least common multiple Common multiple of some numbers.Least common multiple (LCM). Finding LCM. Common multiple of some numbers is called a number, which is divisible by each of them. For example, numbers 9, 18 and 45 have as a common multiple 180. But 90 and 360 are also theirs common multiples. Among all common multiples there is always the least one, in our case … [Read more...]

## Greatest common factor

Greatest common factor Common factor of some numbers.Greatest common factor (GCF). Finding GCF. Common factor of some numbers - a number, which is a factor of each of them. For example, numbers 36, 60, 42 have common factors 2 and 3 . Among all common factors there is always the greatest one, in our case this is 6. This number is called a greatest common … [Read more...]

## Factorization. Resolution into prime factors

Factorization. Resolution into prime factors Prime factoring of composite numbers. Any composite number can be presented as a product of prime factors by the single way. For example, 48 = 2 · 2 · 2 · 2 · 3, 225 = 3 · 3 · 5 · 5, 1050 = 2 · 3 · 5 · 5 · 7. For small numbers this operation is easy. For large numbers it is possible to use the following way. … [Read more...]