Adding Two-Digit Numbers with Pennies and Dimes

What is the first step in adding two-digit numbers using pennies and dimes?

• Write the numbers horizontally.

• Add the ones first.

• Write the numbers vertically.

• Add the tens first.

Why can't we place two digits in one column when adding?

• It makes the addition process slower.

• It can lead to incorrect answers.

• It is against mathematical rules.

• It is not visually appealing.

What is the correct sum of 23 cents and 47 cents?

• 50 cents

• 70 cents

• 90 cents

• 610 cents

How do we verify the sum of two numbers using pennies and dimes?

• By counting only the pennies.

• By counting only the dimes.

• By using a calculator.

• By counting both pennies and dimes.

In the example of 58 cents plus 28 cents, what is the correct sum?

• 716 cents

• 86 cents

• 100 cents

• 58 cents

What is the importance of aligning numbers vertically when adding?

• It makes the numbers look neat.

• It is a traditional method.

• It ensures correct addition of tens and ones.

• It helps in quick subtraction.

What is the sum of 8 cents and 42 cents?

• 80 cents

• 70 cents

• 60 cents

• 50 cents

Why do we trade 10 pennies for a dime?

• To make counting easier.

• To reduce the number of coins.

• To follow a mathematical rule.

• To make the sum look smaller.

What should you do if the sum of the ones place is greater than 9?

• Subtract the extra digit.

• Carry over the extra digit to the tens place.

• Write both digits in the ones place.

• Ignore the extra digit.

What is the main takeaway from the lesson on adding two-digit numbers?

• Carry over when necessary.

• Always use a calculator.

• Avoid using dimes.

• Align numbers horizontally.