We have hundreds of course questions with personalized recommendations + Account 100% premium
To solve the problem of adding 39 and 24, follow these steps:
Step 1: Write the numbers in a column format, aligning the digits by their place value (ones under ones, tens under tens):
39
+ 24
------
Step 2: Add the digits in the 'ones' column: 9 + 4 = 13. Write the 3 in the 'ones' place and carry over 1 to the 'tens' place.
Step 3: Add the digits in the 'tens' column along with the carry: 3 + 2 + 1 (carry) = 6. Write the 6 in the 'tens' place.
Final Calculation:
63
Therefore, the sum of 39 and 24 is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
When adding digits creates a sum of 10 or more, you write the ones digit in that column and 'carry' the tens digit to the next column. Think of it as exchanging 10 ones for 1 ten!
Each column can only hold one digit! Writing 13 would mean you have 13 in the ones place, which doesn't follow place value rules. Always separate: 3 goes in ones, 1 gets carried to tens.
You need to carry whenever the sum of digits in any column is 10 or greater. In this problem, 9+4=13, which is greater than 9, so you must carry the 1.
You'll get the wrong answer! In 39+24, forgetting to carry gives you 513 instead of 63. Always double-check that sums of 10+ are properly regrouped.
You can, but it's trickier with carrying! The standard right-to-left method (ones first, then tens) makes regrouping much clearer and reduces errors.
Try these methods:
Get unlimited access to all 18 Natural Numbers around 100 questions, detailed video solutions, and personalized progress tracking.
Unlimited Video Solutions
Step-by-step explanations for every problem
Progress Analytics
Track your mastery across all topics
Ad-Free Learning
Focus on math without distractions
No credit card required • Cancel anytime