Mastering Multiplication with Finger Tricks

In this video, Presh Talwalkar demonstrates a unique method to multiply numbers from 6 to 10 using fingers. The technique involves aligning fingers to represent numbers and counting fingers below and above the touching fingers to determine the tens and units digits of the product. The video includes examples of multiplying 7 by 8, 6 by 9, and 6 by 7, illustrating the method's effectiveness. The video concludes with a call to subscribe for more math and game theory content.

What is the range of numbers you can multiply using the finger method described in the video?

• 1 through 5

• 16 through 20

• 6 through 10

• 11 through 15

Tags

CCSS.4.NBT.B.5

In the example of 7 times 8, how many fingers are below the touching fingers?

• 7

• 6

• 5

• 4

Tags

CCSS.3.OA.A.1

What is the tens digit in the result of 7 times 8 using the finger method?

• 6

• 7

• 5

• 4

Tags

CCSS.4.NBT.B.5

How do you calculate the units digit in the finger method for 7 times 8?

• Multiply the fingers above the touching fingers

• Subtract the fingers above the touching fingers

• Add the fingers above the touching fingers

• Divide the fingers above the touching fingers

Tags

CCSS.4.NBT.B.5

In the example of 6 times 9, how many fingers are below the touching fingers?

• 5

• 4

• 6

• 7

What is the final result of 6 times 9 using the finger method?

• 53

• 55

• 52

• 54

Tags

CCSS.4.NBT.B.5

In the example of 6 times 7, how many fingers are below the touching fingers?

• 5

• 4

• 3

• 2

What is the tens digit in the result of 6 times 7 using the finger method?

• 40

• 30

• 50

• 20

Tags

CCSS.4.NBT.B.5

How do you calculate the units digit in the finger method for 6 times 7?

• Multiply the fingers above the touching fingers

• Subtract the fingers above the touching fingers

• Add the fingers above the touching fingers

• Divide the fingers above the touching fingers

Tags

CCSS.4.NBT.B.5

What is the final result of 6 times 7 using the finger method?

• 43

• 42

• 41

• 40

Tags

CCSS.3.OA.A.1