Arithmetic Sequence: What Number Comes Before 7010?

Number Sequences with Predecessor Finding

The number after me is 7010. What number am I?

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

The number after me is 7010. What number am I?

2

Step-by-step solution

To solve this problem, we'll use the concept of finding a predecessor, which involves simple arithmetic subtraction:

  • Step 1: Identify the given successor number, which is 7010.
  • Step 2: Subtract 1 from this successor number to find the predecessor.

Now, let's work through each step:
Step 1: We have the number 7010 as the successor.
Step 2: Since the number before 7010 is its predecessor, we calculate:
70101=7009 7010 - 1 = 7009 .

Therefore, the number immediately before 7010 is 7009 7009 .

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Final Answer

7009 7009

Key Points to Remember

Essential concepts to master this topic
  • Rule: The predecessor is always one less than the given number
  • Technique: Subtract 1 from the successor: 70101=7009 7010 - 1 = 7009
  • Check: Verify that your answer plus 1 equals the original: 7009+1=7010 7009 + 1 = 7010

Common Mistakes

Avoid these frequent errors
  • Adding 1 instead of subtracting
    Don't add 1 to find what comes before = 7010+1=7011 7010 + 1 = 7011 ! This gives you the successor (next number) instead of the predecessor. Always subtract 1 to find the number that comes before.

Practice Quiz

Test your knowledge with interactive questions

Which number succeeds the number 9209?

FAQ

Everything you need to know about this question

What's the difference between predecessor and successor?

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A predecessor is the number that comes before (subtract 1), while a successor is the number that comes after (add 1). Think of it like counting backwards vs forwards!

Why do we subtract 1 instead of adding?

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When you want the number before another number, you move backward on the number line. Moving backward means subtracting, just like counting down: 7010, 7009, 7008...

Does this work for all numbers?

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Yes! This works for all integers - positive, negative, and even zero. For example, the number before -5 is -6, and the number before 0 is -1.

How can I remember which operation to use?

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Think of it this way: before means backward, which means subtract. After means forward, which means add. Before = subtract 1, after = add 1!

What if the question asks for the number after instead?

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Then you would add 1 instead! If the number before me is 7009, then I am 7009+1=7010 7009 + 1 = 7010 . Always read carefully to see if you need before (subtract) or after (add).

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