Step 1: Align the numbers by place value: 750,000 - 80,000 Step 2: Subtract the ten-thousands place: 50,000 - 80,000 cannot be done directly, so borrow 1 from the hundred-thousands place, turning 700,000 into 600,000 and 50,000 into 150,000. Step 3: Subtract: 150,000 - 80,000 = 70,000, then add the remaining 600,000: 600,000 + 70,000 = 670,000

Year 6 Arithmetic: Solve 750,000 - 80,000

$Math Problem$

Mathematics Year 6 (Primary School)

Question Content

750,000 - 80,000 =

Correct Answer

670000

Detailed Solution Steps

1
Step 1: Align the numbers by place value: 750,000 - 80,000
2
Step 2: Subtract the ten-thousands place: 50,000 - 80,000 cannot be done directly, so borrow 1 from the hundred-thousands place, turning 700,000 into 600,000 and 50,000 into 150,000.
3
Step 3: Subtract: 150,000 - 80,000 = 70,000, then add the remaining 600,000: 600,000 + 70,000 = 670,000

Knowledge Points Involved

Whole Number Subtraction with Borrowing

When subtracting multi-digit whole numbers, if the digit in the minuend's place is smaller than the corresponding digit in the subtrahend, we borrow 1 from the next higher place value (which is equivalent to 10 times the current place value). This is used in scenarios like calculating remaining quantities, budget differences, etc.

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