Long Multiplication: 990 × 7
What is 990 × 7?
Answer
990 × 7 and 7 × 990 are the same product — the order of the factors never changes the answer, only the working. Below, 990 is multiplied by 7 in a column, digit by digit.
990 × 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.
| 9 | 9 | 0 | ||
| × | 7 | |||
| 6 | 9 | 3 | 0 |
Step-by-Step Solution
Step 1: Multiply the multiplicand by the last digit of the multiplier, 7: 990 × 7 = 6,930.
- 0 × 7 = 0. Write 0.
- 9 × 7 = 63. Write 3 and carry 6.
- 9 × 7 = 63, plus the carried 6 makes 69. Write 9 and carry 6.
- No digits are left, so the carried 6 is written in front: the partial product is 6,930.
990 × 7
=6,930
Check It, and What It Is Not
Check by dividing back. Multiplication and division undo each other, so 6,930 ÷ 7 = 990 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.
990 × 7 is a number, not an area. If those are the sides of a room in feet, the answer is 6,930 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.
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/990--7">990 × 7 = 6,930 - Long Multiplication - Calculatio</a>