Place Value Addition: Adding 6 Tens and 7 Units to 12

Place Value Addition with Multi-Step Calculation

What number do we get if we add 6 tens and 7 units to the number 12?

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

What number do we get if we add 6 tens and 7 units to the number 12?

2

Step-by-step solution

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

  • Step 1: Calculate the value of 6 tens.
  • Step 2: Calculate the value of 7 units.
  • Step 3: Add the values obtained in Steps 1 and 2.
  • Step 4: Add this result to the initial number.

Let's work through each step:

Step 1: Calculate the value of 6 tens.
Each "ten" represents 10 units, so 6 tens equals 6×10=60 6 \times 10 = 60 .

Step 2: Calculate the value of 7 units.
Each "unit" represents 1, so 7 units equal 7×1=7 7 \times 1 = 7 .

Step 3: Add the values from Steps 1 and 2.
The total value of tens and units is 60+7=67 60 + 7 = 67 .

Step 4: Add this result to the initial number, 12.
So, 12+67=79 12 + 67 = 79 .

Therefore, when we add 6 tens and 7 units to the number 12, we obtain 79 79 .

3

Final Answer

79 79

Key Points to Remember

Essential concepts to master this topic
  • Place Value Rule: Tens represent groups of 10, units represent individual ones
  • Technique: Calculate 6 × 10 = 60, then 60 + 7 = 67 to combine
  • Check: Verify by counting: 12 + 67 = 79 (or 10+10+10+10+10+10+7+12) ✓

Common Mistakes

Avoid these frequent errors
  • Adding place values incorrectly
    Don't just add 6 + 7 + 12 = 25! This ignores that 'tens' means groups of 10, not individual units. The 6 tens must be converted to 60 first. Always convert place values to their actual numerical value before adding.

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's the difference between 'tens' and regular numbers?

+

Tens represent groups of 10! When we say '6 tens', we mean 6 groups of 10, which equals 6×10=60 6 \times 10 = 60 . It's not just the digit 6.

Why can't I just add 6 + 7 + 12?

+

Because 6 tens doesn't mean the number 6! It means 60. You must convert place values first: 6 tens = 60, 7 units = 7, then 60 + 7 + 12 = 79.

How do I remember to convert tens to their value?

+

Think of it like money! 6 ten-dollar bills isn't worth 6itsworth6 - it's worth 60. Same with place value: 6 tens = 60 ones.

What if I had hundreds or thousands too?

+

Same process! Convert each place value: 3 hundreds = 300, 4 tens = 40, 5 units = 5. Then add them all: 300 + 40 + 5 = 345.

Can I solve this problem in a different order?

+

Yes! You could add 12 + 60 + 7, or even 12 + 7 + 60. The order doesn't matter in addition, but you must still convert place values first.

🌟 Unlock Your Math Potential

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

More Questions

Click on any question to see the complete solution with step-by-step explanations