Long Multiplication

The video tutorial covers multiplication techniques, starting with multiplying 59 by 25 and 23 by 19, emphasizing the importance of carrying over numbers and writing zeros when multiplying tens. It also explains how to verify multiplication results using inverse operations like division. Finally, it addresses multiplying numbers with decimals, highlighting the minimal extra work required and the importance of counting decimal places.

What is the first step when multiplying 59 by 25?

• Write a zero before starting.

• Add the numbers directly.

• Multiply 5 by 5 and write the result.

• Multiply 5 by 9 and carry over the result.

When multiplying by tens, what should you remember to do?

• Divide by 10.

• Multiply by 100.

• Subtract one from the result.

• Add a zero to the result.

How can you verify the result of a multiplication problem?

• By adding the numbers again.

• By using the inverse operation of division.

• By multiplying the result by 2.

• By subtracting the numbers.

What is the product of 23 times 19?

• 4370

• 347

• 3470

• 437

When multiplying numbers with decimals, what is the additional step?

• Add a zero to the end.

• Move the decimal point to the right.

• Multiply by 10.

• Count the decimal places and adjust the decimal point in the product.