Add three or more numbers up to three digits each

Key notes

Key Points:

• Addition means combining numbers to find the total (sum).
• We can add 3 or more numbers at a time.
• Numbers can be 1-digit, 2-digit, or 3-digit.
• Always start adding from the ones place, then tens place, then hundreds place.
• If the sum in one place is more than 9, carry over to the next place.

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✏️ Steps to Add:

• Write the numbers one below the other (align digits in ones, tens, and hundreds columns).
• Start with the ones column → add all digits.
• If the sum is 10 or more, carry the extra digit to the tens column.
• Add the tens column → don’t forget to add the carry.
• Add the hundreds column → again, include any carry if present.
• Write the final answer (sum).

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✅ Examples:

• Example 1:
• Add 124 + 132 + 143

    124
  + 132
  + 143
  ------
    399

• So, 124 + 132 + 143 = 399

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• Example 2 (with carry):
• Add 256 + 178 + 235

    256
  + 178
  + 235
  ------
    669

• So, 256 + 178 + 235 = 669

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🎯 Practice Questions:

• 145 + 223 + 112 = ?
• 321 + 215 + 143 = ?
• 408 + 256 + 134 = ?
• 129 + 178 + 243 = ?
• 300 + 250 + 199 = ?

Learn with an example

Let’s practice!