All questions of Addition for Class 1 Exam

729

Break 51 and 28 into tens and ones:
51 = 50 + 1, 28 = 20 + 8
Add tens: 50 + 20 = 70
Add ones: 1 + 8 = 9
Now add the results: 70 + 9 = 79
Thus, the correct answer is Option C.

The Result of 3,489 + 2,512

To find the result of adding 3,489 and 2,512, we need to follow the steps of addition. We will start by adding the ones place, then the tens place, and finally the hundreds place.

Step 1: Adding the Ones Place
The ones place in 3,489 is 9, and the ones place in 2,512 is 2. When we add these two numbers, we get 9 + 2 = 11. Since 11 is a two-digit number, we carry over the 1 to the tens place.

Step 2: Adding the Tens Place
The tens place in 3,489 is 8, and the tens place in 2,512 is 1. We also need to add the carry-over of 1 from the previous step. So, we have 8 + 1 + 1 = 10. Again, 10 is a two-digit number, so we carry over the 1 to the hundreds place.

Step 3: Adding the Hundreds Place
The hundreds place in 3,489 is 3, and the hundreds place in 2,512 is 2. We also need to add the carry-over of 1 from the previous step. So, we have 3 + 2 + 1 = 6.

Putting it all together
After adding the ones place, tens place, and hundreds place, we get the result of 3,489 + 2,512 as 6,011.

Therefore, the correct answer is option C) 6,011.

Break 82 and 13 into tens and ones:
82 = 80 + 2, 13 = 10 + 3
Add tens: 80 + 10 = 90
Add ones: 2 + 3 = 5
Now add the results: 90 + 5 = 95
Thus, the correct answer is Option B.

Understanding the Problem
To solve the problem of adding 58 and 19, we need to break down the addition step by step.
Step 1: Align the Numbers
- Write the numbers one below the other:
58
+ 19
Step 2: Add the Ones Place
- Look at the rightmost digits (the ones place):
- 8 (from 58) + 9 (from 19) = 17
- Since 17 is a two-digit number, we write down 7 and carry over 1 to the next column.
Step 3: Add the Tens Place
- Move to the left to add the tens:
- 5 (from 58) + 1 (from the carried over 1) + 1 (from 19) = 7
- Write down the 7 in the tens place.
Step 4: Combine the Results
- Combine the results from the two steps:
58
+ 19
----
77
Final Result
- Therefore, 58 + 19 = 77.
- The correct answer is option 'C' (77).
This breakdown allows us to see the process of addition clearly, confirming that option 'C' is indeed the correct answer.

Break 67 and 16 into tens and ones:
67 = 60 + 7, 16 = 10 + 6
Add tens: 60 + 10 = 70
Add ones: 7 + 6 = 13
Now add the results: 70 + 13 = 83
Thus, the correct answer is Option B.

Understanding the Question
In the problem, we need to find the sum of two numbers: 39 and 27.
Step-by-Step Addition
To perform the addition, follow these simple steps:
- Align the Numbers: Write the numbers one under the other, aligning them by their rightmost digits.
39
+ 27
- Add the Units Place: Start by adding the digits in the units place (rightmost):
- 9 (from 39) + 7 (from 27) = 16
- Write down 6 and carry over 1 to the next column.
- Add the Tens Place: Next, add the digits in the tens place along with the carry:
- 3 (from 39) + 2 (from 27) + 1 (the carry) = 6
- Combine the Results: Now, combine both results:
- The sum of the units place is 6, and the sum of the tens place is 6.
- Therefore, the final result is 66.
Conclusion
Thus, the correct answer to the addition of 39 and 27 is 66, which corresponds to option 'C'.
By breaking down the process, we see that simple addition can be easily managed with proper alignment and carrying techniques.

Sum of 312 and 439:

To find the sum of two numbers, 312 and 439, you need to add them together.

Step 1: Write down the two numbers, 312 and 439, vertically.
```
312
+ 439
______
```

Step 2: Start by adding the digits in the rightmost column, which is the ones place.

The ones place of 312 is 2, and the ones place of 439 is 9. Adding these two numbers, we get 11.

Write down the 1 in the ones place of the sum and carry over the 10 to the next column.
```
312
+ 439
______
1
```

Step 3: Move to the next column, which is the tens place.

The tens place of 312 is 1, and the tens place of 439 is 3.

Adding the carried over 10, we have 1 + 3 + 10 = 14.

Write down the 4 in the tens place of the sum and carry over the 10 to the next column.
```
312
+ 439
______
14
```

Step 4: Move to the next column, which is the hundreds place.

The hundreds place of 312 is 3, and the hundreds place of 439 is 4.

Adding the carried over 10, we have 3 + 4 + 10 = 17.

Write down the 7 in the hundreds place of the sum and carry over the 10 to the next column.
```
312
+ 439
______
17
```

Step 5: Since there are no more columns to add, we can stop here.

The sum of 312 and 439 is 751.

Therefore, the correct answer is option A) 721.

To find the sum of 986 and 451, we can use the standard method of addition. Let's break down the addition step by step:

Step 1: Start by aligning the ones place (units place) of both numbers vertically.
986
+ 451

Step 2: Add the digits in the ones place, which are 6 and 1.
986
+ 451
------
7

Step 3: Move to the next place value, which is the tens place.
986
+ 451
------
7

Step 4: Add the digits in the tens place, which are 8 and 5.
986
+ 451
------
37

Step 5: Move to the next place value, which is the hundreds place.
986
+ 451
------
37

Step 6: Add the digits in the hundreds place, which are 9 and 4.
986
+ 451
------
137

Step 7: Since we have no more place values to add, we have our final sum.
986
+ 451
------
1,437

Therefore, the sum of 986 and 451 is 1,437.

Hence, the correct option is (c) 1,527.

Break 76 and 23 into tens and ones:
76 = 70 + 6, 23 = 20 + 3
Add tens: 70 + 20 = 90
Add ones: 6 + 3 = 9
Now add the results: 90 + 9 = 99
Thus, the correct answer is Option A.

Break 62 and 37 into tens and ones:
62 = 60 + 2, 37 = 30 + 7
Add tens: 60 + 30 = 90
Add ones: 2 + 7 = 9
Now add the results: 90 + 9 = 99
Thus, the correct answer is Option D.

Break 94 and 23 into tens and ones:
94 = 90 + 4, 23 = 20 + 3
Add tens: 90 + 20 = 110
Add ones: 4 + 3 = 7
Now add the results: 110 + 7 = 117
Thus, the correct answer is Option A.

Break 35 and 12 into tens and ones:
35 = 30 + 5, 12 = 10 + 2
Add tens: 30 + 10 = 40
Add ones: 5 + 2 = 7
Now add the results: 40 + 7 = 47
Thus, the correct answer is Option C.

Break 41 and 19 into tens and ones:
41 = 40 + 1, 19 = 10 + 9
Add tens: 40 + 10 = 50
Add ones: 1 + 9 = 10
Now add the results: 50 + 10 = 60
Thus, the correct answer is Option B.