LESSON 7 Multiplication Strategies for Larger Numbers

1. Pilot Jones flies in and out of Busy Bee Airport. This airport has four runways. Workers are putting new lights along the runways. Each runway needs 324 lights. Estimate about how many lights will be needed for all the runways at Busy Bee Airport.

2. Use any method you wish to calculate the exact number of lights for the four runways at Busy Bee Airport. Explain your work with numbers, words, pictures, or base-ten shorthand.

Connect Methods and Strategies

Irma found the total number of lights by modeling 4 324 using base-ten pieces. When she added her pieces, she wrote the problem on the right.

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