Math Trick for Multiplying by 9

This video from Moomoomath and Science introduces a simple trick for multiplying single digits by 9. The trick involves two steps: subtracting 1 from the number being multiplied by 9 to get the first digit, and subtracting this result from 9 to get the second digit. The video provides examples with numbers 8, 7, 6, and 3 to demonstrate the trick. It concludes with a call to action to subscribe and share the channel's daily math and science videos.

What is the first step in the math trick for multiplying a single digit by 9?

• Subtract 1 from the number

• Multiply the number by 2

• Divide the number by 2

• Add 1 to the number

After finding the first digit in the math trick, what should you do next?

• Subtract the first digit from 9

• Divide the first digit by 9

• Multiply the first digit by 9

• Add the first digit to 9

Using the math trick, what is the result of 8 times 9?

• 63

• 54

• 72

• 81

What is the result of 9 times 7 using the math trick?

• 63

• 56

• 81

• 72

Using the math trick, what is the result of 6 times 9?

• 45

• 63

• 72

• 54

What is the result of 3 times 9 using the math trick?

• 45

• 18

• 27

• 36