Dividing Using Rectangular Arrays

This lesson teaches how to use rectangular arrays to solve division problems. It begins with a review of multiplication and division as inverse operations and demonstrates breaking down multiplication problems into smaller parts. The lesson includes examples of dividing numbers using rectangular arrays, emphasizing smart rounding for estimates and visual representation of division.

What is the relationship between multiplication and division?

• They are unrelated operations.

• They are inverse operations.

• They are the same operation.

• They are complementary operations.

How can complex multiplication problems be simplified?

• By breaking them into smaller parts.

• By using a calculator.

• By adding more numbers.

• By ignoring them.

What is the purpose of using a rectangular array in division?

• To make the problem more complex.

• To multiply numbers.

• To avoid doing any calculations.

• To visually represent the division process.

What is the smart estimate for 1,590 divided by 15?

• 110

• 90

• 150

• 100

How many times is 15 subtracted from 1,590 in the example?

• 3 times

• 6 times

• 4 times

• 5 times

What is the smart estimate for dividing 1,138 pencils among 11 students?

• 110

• 100

• 90

• 95

What is the remainder when 1,138 is divided by 11?

• 5

• 3

• 9

• 7