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Multiplier — Definition, Formula & Examples

A multiplier is the number that tells you how many times to count another number in a multiplication problem. In 3×5=153 \times 5 = 15, the multiplier is 33 because you are taking 55 three times.

In the multiplication expression a×b=ca \times b = c, the multiplier is the factor aa that indicates how many groups of the multiplicand bb are combined to produce the product cc.

Key Formula

multiplier×multiplicand=product\text{multiplier} \times \text{multiplicand} = \text{product}
Where:
  • multiplier\text{multiplier} = The number of groups
  • multiplicand\text{multiplicand} = The size of each group
  • product\text{product} = The result of the multiplication

Worked Example

Problem: A box holds 6 crayons. You have 4 boxes. How many crayons do you have in total?
Identify the parts: The multiplier is 4 (the number of groups) and the multiplicand is 6 (crayons per box).
4×64 \times 6
Multiply: Four groups of 6 equals 24.
4×6=244 \times 6 = 24
Answer: You have 24 crayons. Here, 4 is the multiplier.

Why It Matters

Understanding which number is the multiplier helps you set up word problems correctly, especially when you need to figure out "how many groups" versus "how many in each group." This distinction becomes important when you move on to division and work with fractions.

Common Mistakes

Mistake: Confusing the multiplier with the multiplicand.
Correction: The multiplier tells you the number of groups; the multiplicand tells you the size of each group. In 4×64 \times 6, 4 is the multiplier and 6 is the multiplicand. The product is the same either way, but the roles are different.