644 multiplied by 21 is 13524

Explanation: Multiplication is repeated addition. So, 644 × 21 means adding 644, 21 times:

Word Problem Style

If you have 21 boxes and each box contains 644 apples, then the total number of apples is 13524.

Quick Facts

• 644 is called the multiplicand.
• 21 is called the multiplier.
• The result, 13524, is called the product.

Multiplication Table for 644

Explore More Multiplications

• 644 × 22
• 644 × 23
• 644 × 24
• 644 × 25
• 644 × 26
• 645 × 21
• 646 × 21
• 647 × 21
• 648 × 21
• 649 × 21