Part 6/7:
Units: 8 + 5 = 13 (write 3, carry over 1).
Tens: 6 + 7 + 1 = 14 (write 4, carry over 1).
Hundreds: 4 + 6 + 1 = 11 (write 1, carry over 1).
Thousands: 1 + 0 + 1 = 2.
Hence, the total price for the TV on credit is R$2,143.
Conclusion and Best Practices
In solving mathematical problems, especially those involving addition of natural numbers, the critical steps include:
Reading the Problem Carefully: Identify all relevant information.
Finding Key Terms: Words like “together,” “total,” or “in addition” guide your operations toward addition.
Setting Up the Calculation: Organize your numbers according to their place values before performing the addition.