Total Cost: Buying 4 pens

easyGrade 2-4total cost

The Problem

David buys 4 pens. Each pen costs $8. How much does David spend in total?

Answer:

$32

Key Information

  • Price per pen: $8
  • Number of pens: 4

Formula

Total Cost = Price × Quantity

Step-by-Step Solution

1

Identify the price and quantity

Price per pen = $8, Quantity = 4
2

Set up equation

Total cost = Price × Quantity
3

Substitute values

Total cost = $8 × 4
4

Calculate

8 × 4 = 32
5

Final answer

David spends $32

Common Mistakes to Avoid

  • Adding instead of multiplying
  • Using wrong numbers

Helpful Tips

  • Multiply price by quantity to get total
  • Double-check which number is the price and which is quantity

Real-World Application

Calculating total cost is essential for budgeting and shopping.

Related Topics:

moneyshoppingmultiplicationword problems

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