Staircase Method for Multiplication

The video introduces the staircase method for multi-digit multiplication and multiplying decimals. It explains the traditional algorithm's challenges and presents the staircase method as a solution, using pre-done sheets to simplify the process. The video includes examples of multi-digit and decimal multiplication, demonstrating the method's effectiveness. Students are encouraged to practice with provided problems to reinforce their understanding.

What is the primary benefit of using the staircase method for multiplication?

• It requires less writing.

• It reduces the chance of errors.

• It is faster than traditional methods.

• It uses fewer sheets of paper.

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CCSS.5.NBT.B.5

In the example of multiplying 987 by 65, what is the first step in the staircase method?

• Multiply 65 by 7.

• Add 987 and 65.

• Break down 987 into 980 and 7.

• Multiply 987 by 5.

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CCSS.4.NBT.B.5

When using the staircase method, how do you handle zeros in multiplication?

• Add them after multiplying the non-zero digits.

• Ignore them completely.

• Multiply them separately.

• Subtract them from the result.

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CCSS.2.NBT.A.3

In Example 1, what is the breakdown of the number 543?

• 500 and 43

• 540 and 3

• 500 and 43

• 530 and 13

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CCSS.4.NBT.B.5

What is the result of multiplying 543 by 21 using the staircase method?

• 12,000

• 11,403

• 10,860

• 11,500

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CCSS.5.NBT.B.7

In Example 2, what is the initial multiplication problem before converting to a decimal?

• 876 x 50

• 876 x 5

• 876 x 0.05

• 876 x 0.5

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CCSS.5.NBT.B.7

How is the decimal point adjusted in the final answer of Example 2?

• By moving it two places to the left.

• By moving it one place to the right.

• By adding a zero at the end.

• By removing it completely.

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CCSS.5.NBT.B.7

In Example 3, how is the number 2.34 treated initially for multiplication?

• As 234

• As 2.34

• As 0.234

• As 23.4

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CCSS.6.NS.B.3

What is the final answer for the multiplication of 2.34 by 0.07 using the staircase method?

• 0.1630

• 163.0

• 1.630

• 16.30

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CCSS.5.NBT.B.7

How many numbers should be behind the decimal in the final answer of Example 3?

• Three

• One

• Four

• Two

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CCSS.5.NBT.B.7