Addition: Graphical representation

To find the resulting number when ten units are added to 72, we will perform the following steps:

• Step 1: Identify the starting number, which is 72.
• Step 2: Add 10 to the starting number. This is done by calculating $72 + 10$.

Let's perform the calculation:

$72 + 10 = 82$

Therefore, the resulting number when ten units are added to 72 is $82$.

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

• Step 1: Identify the initial number and the amount to be added.
• Step 2: Perform the addition of the two numbers.

Now, let's work through each step:

Step 1: The initial number is given as 66, and we need to add 20 to it.

Step 2: We'll perform the addition:
$66 + 20 = 86$

Therefore, the solution to the problem is $86$.

To solve this problem, we'll perform simple addition:
Step 1: Identify the numbers to be added, which are 31 and 50.
Step 2: Calculate the sum: $31 + 50$.

Let's perform the calculation:

• Start the addition from the rightmost digit (units place).
• In the units place, add 1 (from 31) and 0 (from 50), giving us 1.
• In the tens place, add 3 (from 31) and 5 (from 50), which gives us 8.

Since there's nothing to carry over, the sum directly gives us the resulting number. Thus, $31 + 50 = 81$.

Therefore, the resulting number when adding fifty units to the number 31 is $81$.

To solve the problem, we will perform simple addition:

• Step 1: Identify the numbers involved. We have the number $44$ and we need to add $30$ to it.
• Step 2: Use the addition formula to find the sum. This is calculated as $44 + 30$.
• Step 3: Perform the calculation. Since $44 + 30 = 74$, we find that the resulting number is $74$.

Therefore, the solution to the problem is $74$.

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

• Step 1: Identify the initial number.
• Step 2: Add 3 tens to the initial number.
• Step 3: Add 4 units to the result of Step 2.

Now, let's work through each step:
Step 1: The problem gives us the initial number as $61$.
Step 2: Add 3 tens (which is $30$) to $61$:
$61 + 30 = 91$.
Step 3: Add 4 units to $91$:
$91 + 4 = 95$.

Therefore, the resulting number after adding 3 tens and 4 units to $61$ is $95$.

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 $6 \times 10 = 60$.

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

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

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

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

To solve this problem, we need to add one ten (10) and one unit (1) to the number 66.

We'll follow these steps to find the new number:

• Step 1: Start with the original number, $66$.
• Step 2: Add one ten. This means adding $10$ to $66$.
  $66 + 10 = 76$.
• Step 3: Add one unit to the result from Step 2. This means adding $1$ to $76$.
  $76 + 1 = 77$.

Therefore, after adding one ten and one unit to 66, the resulting number is $77$.

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

• Step 1: Add the 3 tens to the number 55.
• Step 2: Add the 4 units to the result from Step 1.

Let's work through each step:

Step 1: We need to add three tens to 55. Three tens equal $3 \times 10 = 30$.
Thus, adding 30 to 55 gives us:

$55 + 30 = 85$

Step 2: Now, we add the 4 units to the result of Step 1 (which is 85).
Adding 4 gives us:

$85 + 4 = 89$

Therefore, the solution to the problem is $89$.

To solve this problem, we'll perform the addition step-by-step, carefully keeping track of place values.

First, we start with the number 34.
We need to add 2 tens, which is equivalent to adding 20. Thus:
$34 + 20 = 54$

Next, add 2 units to the new total:
$54 + 2 = 56$

The final number we get after adding 2 tens and 2 units to 34 is $\mathbf{56}$.