Mastering Multiplication and Division by 10, 100, and 1000

Maria introduces multiplication shortcuts for 10, 100, and 1000, explaining the place value system. She demonstrates practical applications, solves missing factor problems, and teaches division shortcuts. The video concludes with calculating age using year numbers.

What is the result of multiplying 75 by 10 using the shortcut?

• 750

• 705

• 570

• 507

How many zeros do you add when multiplying a number by 100?

• 1

• 2

• 3

• 4

What is the result of multiplying 39 by 1000 using the shortcut?

• 390000

• 3900000

• 39000

• 3900

Why does the shortcut for multiplying by 10, 100, and 1000 work?

• Because of the binary system

• Because of the place value system

• Because of the number of digits

• Because of the decimal system

What happens to the place value of digits when multiplying by 10?

• They move one place to the left

• They move one place to the right

• They stay the same

• They double

How many hundred dollar bills does Mr. Jefferson need to buy a lawn tractor costing $1299?

• 10

• 11

• 13

• 12

What is the result of dividing 15000 by 10 using the shortcut?

• 150000

• 15000

• 150

• 1500

How many zeros do you remove when dividing a number by 100?

• 1

• 2

• 3

• 4

What is the result of dividing 32000 by 10 using the shortcut?

• 320

• 32000

• 3200

• 320000

How many years did a person live if they were born in 1561 and died in 1637?

• 79

• 78

• 77

• 76