Long Multiplication: 72 × 8
What is 72 × 8?
Answer
72 × 8 and 8 × 72 are the same product — the order of the factors never changes the answer, only the working. Below, 72 is multiplied by 8 in a column, digit by digit.
72 × 8 in a Column
The multiplicand goes on top, the multiplier underneath, both aligned on the right. The multiplier has a single digit, so there is one partial product and the answer goes straight under the line.
| 7 | 2 | ||
| × | 8 | ||
| 5 | 7 | 6 |
Step-by-Step Solution
Step 1: Multiply the multiplicand by the last digit of the multiplier, 8: 72 × 8 = 576.
- 2 × 8 = 16. Write 6 and carry 1.
- 7 × 8 = 56, plus the carried 1 makes 57. Write 7 and carry 5.
- No digits are left, so the carried 5 is written in front: the partial product is 576.
72 × 8
=576
Check It, and What It Is Not
Check by dividing back. Multiplication and division undo each other, so 576 ÷ 8 = 72 must come out exactly, with no remainder.
Fractions are a different calculation. Both factors here are whole numbers; for 2/3 or 2 3/4 use the fraction multiplication calculator, which multiplies numerators and denominators separately.
72 × 8 is a number, not an area. If those are the sides of a room in feet, the answer is 576 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.
Related Calculations
See Also
- Long Division Calculator - Step-by-step long division with detailed explanation
- Multiplying Fractions Calculator - Multiply fractions, mixed numbers and whole numbers step by step
- Factors of a Number - List all Factors and Factor Pairs of a Number
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
<a href="https://calculat.io/en/number/long-multiplication/72--8">72 × 8 = 576 - Long Multiplication - Calculatio</a>