15×8

The expression 15×8 denotes the multiplication of two integers, 15 and 8, with the product equal to 120. It is commonly read as fifteen times eight or eight times fifteen.

In basic arithmetic, 15×8 = (10+5)×8 = 80+40 = 120. The operation is commutative, so 8×15 also equals 120, and the distributive property can be used to break the calculation into simpler parts.

The prime factorization of 120 is 2^3 × 3 × 5. The pair 15 and 8 are relatively prime (gcd 1). The product showcases standard multiplication rules and can be represented by various factor pairs that multiply to 120, such as (15, 8) or (12, 10).

In applications, a rectangle measuring 15 units by 8 units has an area of 120 square units. The expression 15×8 also appears in scaling problems, unit conversions, and counting arrangements where two quantities are combined multiplicatively.

Historically, multiplication tables displaying entries like 15×8 have been used to facilitate mental calculation and serve as quick references in education and commerce.