Collision between cargo train and passenger train near Moscow kills at least 5, 45 injured

What is the basic idea behind the concept of doubling?

• Multiplying a number by zero

• Adding a number to itself

• Halving a number

• Subtracting a number from itself

In which scenario would you apply the concept of doubling?

• When you want to reduce a quantity

• When you want to increase a quantity by a factor of two

• When you want to divide a quantity by two

• When you want to keep a quantity the same

What is the result of doubling the number 5?

• 20

• 15

• 10

• 5

Which of the following is NOT an example of doubling?

• Doubling the length of a rope

• Multiplying 3 by 2

• Adding 4 to 4

• Subtracting 2 from 4

What is the final takeaway from the concept of doubling?

• Doubling is a method to maintain values

• Doubling is a method to increase values

• Doubling is a method to eliminate values

• Doubling is a method to decrease values