Multiplying Numbers with Zeros

This video tutorial demonstrates a simple method for multiplying numbers that end in zeros. The instructor explains how to handle trailing zeros by temporarily setting them aside, performing the multiplication on the remaining numbers, and then reattaching the zeros to the result. The tutorial includes four examples: multiplying 300 by 50, 8000 by 1200, 2400 by 7000, and 532 by 110000. Each example is broken down step-by-step to illustrate the process clearly.

What is the first step in multiplying numbers with trailing zeros?

• Divide the numbers by 10

• Subtract the zeros

• Multiply the numbers without zeros

• Add the zeros first

How many zeros are there in the product of 300 and 50?

• Three

• One

• Two

• Four

What is the result of multiplying 3 by 5 in the first example?

• 18

• 15

• 12

• 10

How many zeros are added back in the first example after multiplying 3 by 5?

• Two

• Three

• Four

• One

In the second example, how many total zeros are there after combining the zeros from both numbers?

• Three

• Six

• Four

• Five

What is the product of 8 and 12 in the second example?

• 116

• 106

• 96

• 86

What is the first step in the second example?

• Multiply the numbers without zeros

• Add the zeros

• Subtract the zeros

• Divide the numbers by 10

How many zeros are added back in the third example after multiplying 24 by 7?

• Six

• Four

• Five

• Three

What is the result of multiplying 24 by 7 in the third example?

• 148

• 158

• 168

• 178

In the third example, what is the first step?

• Divide the numbers by 10

• Subtract the zeros

• Multiply the numbers without zeros

• Add the zeros