Multiplication Techniques Near 100

The video introduces a quick method to solve multiplication problems involving numbers close to 100. It begins with a challenge to solve 89 x 94 in under 5 seconds, followed by a detailed explanation of the trick. The method involves calculating how far each number is from 100, adjusting one number by the other's difference, and then multiplying the differences. The video provides practice problems and solutions, demonstrating the trick with numbers both below and above 100. It concludes with a call to action for viewers to engage with the content.

What is the first step in solving multiplication problems close to 100?

• Subtract the smaller number from the larger one

• Multiply the numbers directly

• Find how far each number is from 100

• Add the numbers together

Tags

CCSS.4.NBT.B.5

In the example 89 x 94, what is the first part of the answer?

• 9400

• 8300

• 8366

• 8900

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying the differences in the example 89 x 94?

• 66

• 83

• 11

• 94

Tags

CCSS.5.NBT.B.5

What should you be cautious of when multiplying numbers over 100?

• The differences will be positive, affecting the final step

• The result will always be less than 10000

• The differences will be negative

• The numbers will need to be divided by 100

Tags

CCSS.5.NBT.B.5

For the problem 95 x 93, what is the final answer?

• 8,835

• 8,800

• 8,366

• 9,000

Tags

CCSS.4.NBT.B.5

When multiplying 109 x 102, what is the first part of the answer?

• 10200

• 11000

• 11100

• 10900

Tags

CCSS.5.NBT.B.5

In the problem 88 x 104, what is the final answer?

• 9152

• 9200

• 9400

• 9000

Tags

CCSS.4.NBT.B.5

How do you adjust the final answer when one number is above 100 and the other is below?

• Divide the differences

• Multiply the differences

• Subtract the product of the differences

• Add the differences

Tags

CCSS.4.NBT.B.5

What is the second part of the answer for 95 x 93?

• 35

• 93

• 7

• 88

Tags

CCSS.5.NBT.B.7

What is the key takeaway from the multiplication trick?

• It requires complex calculations

• It only works for numbers below 100

• It is only useful for even numbers

• It simplifies multiplication of numbers close to 100

Tags

CCSS.5.NBT.B.7