Multiplying Decimals and Story Problems

The video tutorial explains how to multiply decimals by 10, 100, and 1000 by shifting the decimal point to the right according to the number of zeros. It includes a practical example of calculating the total length of ribbons by multiplying a decimal by 1000, demonstrating the concept in a real-world context.

What happens to the decimal point when you multiply a decimal by ten?

• It moves one place to the left.

• It disappears.

• It moves one place to the right.

• It stays the same.

If you multiply 4.56 by ten, what is the result?

• 456

• 4.56

• 0.456

• 45.6

How many places does the decimal point move when multiplying by hundred?

• It does not move

• One place to the left

• Two places to the right

• Three places to the right

What is 3.14 multiplied by 100?

• 3140

• 3.14

• 314

• 31.4

When multiplying by thousand, how many places does the decimal point shift?

• Four places to the right

• Two places to the right

• One place to the right

• Three places to the right

Calculate 2.5 multiplied by 1000.

• 250

• 2500

• 25000

• 25

What is the rule for multiplying decimals by ten, hundred, or thousand?

• Multiply the number by itself

• Add zeros to the end of the number

• Shift the decimal point to the left

• Shift the decimal point to the right as many places as there are zeros

In the story problem, what is the length of one ribbon?

• 258 meters

• 0.258 meters

• 25.8 meters

• 2.58 meters

How many ribbons are considered in the story problem?

• 10000

• 1000

• 100

• 10

What is the total length of 1000 ribbons, each 2.58 meters long?

• 25.8 meters

• 258 meters

• 2580 meters

• 25800 meters