Cross and Vertical Multiplication Techniques

The video introduces a multiplication technique called cross and vertical multiplication. It provides a step-by-step guide on how to multiply multi-digit numbers using this method. The instructor demonstrates the technique with three examples, starting with simpler numbers and progressing to more complex ones. The method involves identifying cross and vertical multiplications, creating boxes, and carrying over numbers to achieve the final result. The video concludes by highlighting the technique's effectiveness, even with larger numbers.

What is the first step in cross and vertical multiplication?

• Multiply all digits vertically

• Add zeros to the smaller number

• Look for a cross multiplication

• Start from the rightmost digit

In the example of 316 * 245, what is the result of the first cross multiplication?

• 6

• 12

• 14

• 29

How do you handle a number with fewer digits in cross and vertical multiplication?

• Multiply only the larger number

• Use a different multiplication method

• Add zeros to the smaller number

• Ignore the smaller number

What is the result of the cross multiplication in the example of 316 * 45?

• 19

• 30

• 12

• 29

What is a potential challenge when using cross and vertical multiplication with larger numbers?

• It becomes less accurate

• It requires more steps

• It becomes messy

• It doesn't work for even numbers

In the example of 4,213 * 1,422, what is the result of the first vertical multiplication?

• 4

• 8

• 16

• 12

What is the final answer for the multiplication of 4,213 by 1,422 using this technique?

• 5,990,000,886

• 5,990,886,000

• 5,990,000

• 5,990,886

What is the main advantage of cross and vertical multiplication?

• It is faster than traditional multiplication

• It requires no carrying over

• It is easier for small numbers

• It works for all types of numbers

What should you do if you encounter a cross and vertical multiplication problem with large digits?

• Use a calculator

• Break it into smaller parts

• Use only vertical multiplication

• Avoid using this method

What is the final step in cross and vertical multiplication?

• Add all the results together

• Multiply the last digits

• Subtract the smaller number

• Carry over the last digit