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What is the result of doubling a number?

• Twice the original number

• Half the original number

• Three times the original number

• The original number plus 10

What skill is important to practice in order to become proficient in doubling numbers?

• Adding numbers

• Multiplying numbers

• Dividing numbers

• Doubling numbers

What is the method to double a number?

• Add the number to itself

• Divide the number by 2

• Subtract the number from itself

• Multiply the number by 2

The concept of ___ is important in various mathematical calculations and real-life situations.

What does doubling a number mean?

What is the shortcut for multiplying a number by 40?

• Multiply by 10 and then by 4

• Add 40 to the number

• Multiply by 20 and then double the result

• Multiply by 4 and add a zero

In the passage 'Multiplying by 40', if you want to multiply 7 by 40, you can first multiply 7 by 4 to get 28, and then add a ___ to get 280.

What is the result of multiplying 40 by 2?

• 80

• 120

• 60

• 100

What are some alternative methods for multiplying by 40, especially for larger numbers or for those who are still learning multiplication?