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MathematicsGrade 6en

➕➖ Multi-Digit Addition & Subtraction

Master adding and subtracting whole numbers up to 1,000,000 using standard algorithms, mental math strategies, and regrouping across multiple place values. Learn to estimate sums and differences, and apply these skills to real-world word problems. **What you'll learn:** - Add and subtract whole numbers up to 1,000,000 using standard algorithms - Apply regrouping (borrowing/carrying) across multiple place values - Use mental math strategies for efficient calculation - Estimate sums and differences to check reasonableness - Solve multi-step word problems with real-world contexts

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Questions in this quiz

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  1. Question 1

    What is 456,234+123,456456,234 + 123,456?

  2. Question 2

    When subtracting 325,678−147,234325,678 - 147,234, what is the first step using the standard algorithm?

  3. Question 3

    When you regroup during subtraction, you take 1 from the next higher place value and add 10 to the current place value.

  4. Question 4

    What is 782,405−456,123782,405 - 456,123?

  5. Question 5

    A school library has 235,680 books. The librarian donates 45,320 books to a community center. Approximately how many books remain? (Estimate to the nearest ten thousand.)

  6. Question 6

    Which expression is equivalent to 500,000+250,000+75,000500,000 + 250,000 + 75,000?

  7. Question 7

    When adding two 6-digit numbers, the sum will always be a 6-digit number.

  8. Question 8

    Maria has 567,890inhersavingsaccount.Shewithdraws567,890 in her savings account. She withdraws 123,456. How much does she have left?

  9. Question 9

    What is a useful mental math strategy for adding 999,999+1999,999 + 1?

  10. Question 10

    A factory produced 345,000 widgets in the first quarter and 289,500 widgets in the second quarter. What is the total production for both quarters?

  11. Question 11

    Estimation is only useful when you want to avoid doing exact calculations.

  12. Question 12

    When solving 654,321−234,567654,321 - 234,567, in which place value will regrouping first be needed when working right to left?

  13. Question 13

    A city's population is 856,430. If 123,567 people move away, what is the approximate new population (rounded to the nearest hundred thousand)?

  14. Question 14

    The standard algorithm for addition requires aligning numbers by place value before adding.

  15. Question 15

    Which of the following is the most reasonable estimate for 456,789+342,156456,789 + 342,156?

  16. Question 16

    A warehouse had 520,000 units at the start of the month. It received 87,654 units and sold 93,210 units. How many units does it now have?

  17. Question 17

    What is 1,000,000−456,7891,000,000 - 456,789?