Calculate 1×2×3: Multiplying Three Sequential Numbers

Q: Why do I multiply from left to right?

With multiplication, you can actually multiply in any order because of the commutative property! Left to right is just the standard way to organize your work and avoid confusion.

Q: What if one of the numbers is zero?

If any number in a multiplication chain is zero, the entire result becomes zero. For example: $ 0 \times 2 \times 3 = 0 $.

Q: Can I multiply all three numbers at once?

While mathematically possible, it's much easier to multiply two numbers first, then multiply that result by the third number. This breaks the problem into simpler steps!

Q: How is this different from 1 + 2 + 3?

$ 1 \times 2 \times 3 = 6 $ (multiplication) while $ 1 + 2 + 3 = 6 $ (addition). These happen to give the same answer here, but that's just a coincidence - they're completely different operations!

Q: What's special about multiplying 1, 2, and 3?

This is called a factorial calculation! Specifically, $ 3! = 3 \times 2 \times 1 = 6 $. Factorials are used in probability and counting problems.

Sequential Multiplication with Single-Digit Factors

$1\times2\times3=$

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations

00:04 Let's solve this problem.

00:08 Remember, one times any number equals that number.

00:13 Now, let's work through the multiplication step by step.

00:17 Great job! That's how we solve the question.

Step-by-step written solution

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Understand the problem

$1\times2\times3=$

Step-by-step solution

To solve this problem, we perform the following steps:

Step 1: Begin with the first multiplication, $1 \times 2$ .
Step 2: Multiply the result from Step 1 by the third number, $3$ .

Now, let's execute these steps:

Step 1: Compute $1 \times 2 = 2$ .

Step 2: Continue by multiplying the result from Step 1 by $3$ , which is $2 \times 3 = 6$ .

Thus, the result of multiplying $1 \times 2 \times 3$ is $6$ .

Final Answer

Key Points to Remember

Essential concepts to master this topic

Order: Multiply numbers from left to right in sequence
Technique: First calculate $1 \times 2 = 2$ , then multiply by 3
Check: Verify that $2 \times 3 = 6$ gives the final answer ✓

Common Mistakes

Avoid these frequent errors

Adding numbers instead of multiplying
Don't calculate $1 + 2 + 3 = 6$ instead of multiplying! While this coincidentally gives the same result for these specific numbers, addition and multiplication are completely different operations. Always use the correct operation symbol: $1 \times 2 \times 3 = 6$ .

Practice Quiz

Test your knowledge with interactive questions

$$ 2+0= $$

FAQ

Everything you need to know about this question

Why do I multiply from left to right?

With multiplication, you can actually multiply in any order because of the commutative property! Left to right is just the standard way to organize your work and avoid confusion.

What if one of the numbers is zero?

If any number in a multiplication chain is zero, the entire result becomes zero. For example: $0 \times 2 \times 3 = 0$ .

Can I multiply all three numbers at once?

While mathematically possible, it's much easier to multiply two numbers first, then multiply that result by the third number. This breaks the problem into simpler steps!

How is this different from 1 + 2 + 3?

$1 \times 2 \times 3 = 6$ (multiplication) while $1 + 2 + 3 = 6$ (addition). These happen to give the same answer here, but that's just a coincidence - they're completely different operations!

What's special about multiplying 1, 2, and 3?

This is called a factorial calculation! Specifically, $3! = 3 \times 2 \times 1 = 6$ . Factorials are used in probability and counting problems.

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