3-digit by 1-digit multiplication, step by step
A three-digit top number keeps the single row but stretches the carrying across three places, and the carries can chain.
The question
704 × 5
704 5 3520
- 704 × 5, set out in columns. Multiply one place at a time, starting at the ones on the RIGHT.
- The ones: 4 × 5 = 20. Write the 0 and carry the 2.
- The tens: 0 × 5 = 0, and the 2 carried over makes 2. Write the 2.
- The hundreds: 7 × 5 = 35. Nothing further to carry into, so all of 35 is written down.
- So 704 × 5 = 3520.
How it works.
- 01
704 × 5, set out in columns. Multiply one place at a time, starting at the ones on the RIGHT.
- 02
The ones: 4 × 5 = 20. Write the 0 and carry the 2.
- 03
The tens: 0 × 5 = 0, and the 2 carried over makes 2. Write the 2.
- 04
The hundreds: 7 × 5 = 35. Nothing further to carry into, so all of 35 is written down.
- 05
So 704 × 5 = 3520.