Multiplication Basics
Single-Digit Multiplication With a Carry
Multiply 7 × 8 = 56. The product has two digits: the ones digit (6) stays in the ones place, and the tens digit (5) becomes a carry that moves to the next column — the same carry used in long multiplication.
Example
mult-7x8-carry.math
7 x 8
step: 7 x 8 = 56: write 6, carry 5
step: product 56: ones digit 6, carry 5 to tens place
single-digit-carry
When two single digits multiply to give a two-digit product, the tens digit "carries" to the next column. This is the building block of every multi-digit multiplication algorithm.