Decimal Multiplication In Real Life

Turn shopping, measurement and profit problems into decimal multiplications: shirts, coins, oranges and notebooks.

5 micro-lessons

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From Words to a Multiplication

Spot 'each', 'per' and 'for every': they signal multiplication.

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Two of the book's word problems solved step by step.

Problem 1. A rupee coin is 1.45 mm thick. How tall is a stack of 36 coins, in cm? (Textbook p. 73, Q5)

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Four checks before you answer a decimal word problem.

Before you answer

1. Find the value for one.

2. Multiply by how many.

3. Add the parts if there are different items.

4. Check the unit asked for: mm or cm? paise or rupees? Example: 1.45 mm × 36 = 52.2 mm = 5.22 cm.

Word problems with decimal products.

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Thejus needs 1.65 m of cloth for a shirt. How much for 3 shirts? (Textbook p. 73, Q3)

Work out a bill with decimal prices.

Work out the bill

For a class party you buy 6 samosas at ₹12.50 each, 4 cups of chai at ₹8.75 each and 2 bottles of water at ₹20.00 each. What is the total bill?

Value for one × how many.

Value for one × how many.

Value for one × how many.

Add the three parts.