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Year 6 Arithmetic: Solve 555,805 + 278,537
Mathematics
Year 6 (Primary School)
Question Content
555,805 + 278,537 =
Correct Answer
834342
Detailed Solution Steps
1
Step 1: Align the numbers by their place values (ones, tens, hundreds, thousands, ten-thousands, hundred-thousands):\n 555,805\n + 278,537
2
Step 2: Add from right to left:\n - Ones place: 5 + 7 = 12, write down 2, carry over 1\n - Tens place: 0 + 3 + 1 = 4, write down 4\n - Hundreds place: 8 + 5 = 13, write down 3, carry over 1\n - Thousands place: 5 + 8 + 1 = 14, write down 4, carry over 1\n - Ten-thousands place: 5 + 7 + 1 = 13, write down 3, carry over 1\n - Hundred-thousands place: 5 + 2 + 1 = 8, write down 8
3
Step 3: Combine the digits to get the final result: 834,342
Knowledge Points Involved
1
Multi-digit Whole Number Addition
This is the process of adding numbers with multiple digits, requiring alignment by place value and carrying over values when the sum of a single place value is 10 or greater. It is essential for calculating large totals, such as population sums, total sales figures, etc.
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