Addition Problem: Finding the Sum of 25 Plus 5 Units

Simple Addition with Single-Digit Numbers

What number will we get if we add 5 units to the number 25?

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

What number will we get if we add 5 units to the number 25?

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the numbers that need to be added.
  • Step 2: Perform the addition operation on these numbers.
  • Step 3: Confirm the sum corresponds to one of the provided choices.

Now, let's execute each step:

Step 1: Identify the numbers to add. The numbers mentioned are 25 and 5.

Step 2: Perform the addition:
25+5=30 25 + 5 = 30

Step 3: Verify which choice matches our computed result. The correct answer is choice 1, which shows 30 30 .

Therefore, the solution to the problem is 30 30 .

3

Final Answer

30 30

Key Points to Remember

Essential concepts to master this topic
  • Addition Rule: Combine numbers to find the total sum
  • Technique: Line up numbers and add: 25 + 5 = 30
  • Check: Count forward from 25 by 5 units: 26, 27, 28, 29, 30 ✓

Common Mistakes

Avoid these frequent errors
  • Misunderstanding what 'adding units' means
    Don't think that 'adding 5 units' means something different from adding 5 = confusion about basic terms! The word 'units' is just another way to say the number 5. Always remember that adding 5 units simply means adding the number 5.

Practice Quiz

Test your knowledge with interactive questions

If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?

FAQ

Everything you need to know about this question

What does 'adding units' mean?

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Adding units is just another way of saying adding numbers! When we add 5 units to 25, we're simply doing 25+5 25 + 5 .

How can I check if 30 is the right answer?

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You can count forward from 25: 26, 27, 28, 29, 30. That's exactly 5 steps, so 30 is correct!

Why isn't the answer 35?

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Getting 35 means you accidentally added 10 instead of 5. Always double-check that you're using the correct numbers from the problem.

Is there a faster way than counting?

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Yes! You can use mental math: 25 + 5 = (20 + 5) + 5 = 20 + 10 = 30. Breaking numbers apart makes addition easier!

What if I get confused with bigger numbers?

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Start with the ones place: 5 + 5 = 10, write 0 and carry 1. Then tens place: 2 + 1 = 3. So 25 + 5 = 30!

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