Long Multiplication: 64 × 7
What is 64 × 7?
Answer
64 × 7 and 7 × 64 are the same product — the order of the factors never changes the answer, only the working. Below, 64 is multiplied by 7 in a column, digit by digit.
64 × 7 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.
| 6 | 4 | ||
| × | 7 | ||
| 4 | 4 | 8 |
Step-by-Step Solution
Step 1: Multiply the multiplicand by the last digit of the multiplier, 7: 64 × 7 = 448.
- 4 × 7 = 28. Write 8 and carry 2.
- 6 × 7 = 42, plus the carried 2 makes 44. Write 4 and carry 4.
- No digits are left, so the carried 4 is written in front: the partial product is 448.
64 × 7
=448
Check It, and What It Is Not
Check by dividing back. Multiplication and division undo each other, so 448 ÷ 7 = 64 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.
64 × 7 is a number, not an area. If those are the sides of a room in feet, the answer is 448 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/64--7">64 × 7 = 448 - Long Multiplication - Calculatio</a>