All questions of Addition for Class 1 Exam
If you have 400 on the abacus and add 123, what is the result?- a)523
- b)543
- c)520
- d)524
Correct answer is option 'A'. Can you explain this answer?
If you have 400 on the abacus and add 123, what is the result?
a)
523
b)
543
c)
520
d)
524
|
Keystone Instructors answered |
- Set 400 on the abacus: 4 beads in the hundreds column.
- Add 123: Add 1 bead to the hundreds column (total 5 beads), 2 beads to the tens column, and 3 beads to the ones column.
- The total is 523.
If you have 305 and add 205 using the abacus, what is the sum?- a)510
- b)500
- c)515
- d)505
Correct answer is option 'A'. Can you explain this answer?
If you have 305 and add 205 using the abacus, what is the sum?
a)
510
b)
500
c)
515
d)
505
|
Sarika dubey answered |
Abacus Addition: 305 + 205
Step 1: Representing 305 on the abacus
- Start by representing 300 on the abacus using three beads in the hundreds place.
- Then, represent 5 in the ones place using five beads.
Step 2: Adding 205 to 305
- To add 205, represent 200 on the abacus using two beads in the hundreds place.
- Then, represent 5 in the ones place using five beads.
Step 3: Calculating the Sum
- Count all the beads in the hundreds place, which gives you 500.
- Count all the beads in the ones place, which gives you 10.
- Therefore, the sum of 305 and 205 using the abacus is 510.
Therefore, the correct answer is option A) 510.
Step 1: Representing 305 on the abacus
- Start by representing 300 on the abacus using three beads in the hundreds place.
- Then, represent 5 in the ones place using five beads.
Step 2: Adding 205 to 305
- To add 205, represent 200 on the abacus using two beads in the hundreds place.
- Then, represent 5 in the ones place using five beads.
Step 3: Calculating the Sum
- Count all the beads in the hundreds place, which gives you 500.
- Count all the beads in the ones place, which gives you 10.
- Therefore, the sum of 305 and 205 using the abacus is 510.
Therefore, the correct answer is option A) 510.
What is the sum of 123 and 45 on the abacus?
- a)168
- b)178
- c)188
- d)158
Correct answer is option 'A'. Can you explain this answer?
What is the sum of 123 and 45 on the abacus?
a)
168
b)
178
c)
188
d)
158
|
|
Sara singh answered |
Calculation on the Abacus:
1. Representing 123 on the Abacus:
- To represent 123 on the abacus, you would move 1 bead in the hundreds place, 2 beads in the tens place, and 3 beads in the ones place.
2. Representing 45 on the Abacus:
- To represent 45 on the abacus, you would move 4 beads in the tens place and 5 beads in the ones place.
3. Adding 123 and 45 on the Abacus:
- When you add 123 and 45 on the abacus, you would combine the beads in the respective places to get the total sum.
- Adding the beads in the hundreds place gives 100.
- Adding the beads in the tens place gives 60.
- Adding the beads in the ones place gives 18.
4. Calculating the Total Sum:
- Now, when you add the sums from each place (100 + 60 + 18), you get a total sum of 178.
Therefore, the sum of 123 and 45 on the abacus is 178.
1. Representing 123 on the Abacus:
- To represent 123 on the abacus, you would move 1 bead in the hundreds place, 2 beads in the tens place, and 3 beads in the ones place.
2. Representing 45 on the Abacus:
- To represent 45 on the abacus, you would move 4 beads in the tens place and 5 beads in the ones place.
3. Adding 123 and 45 on the Abacus:
- When you add 123 and 45 on the abacus, you would combine the beads in the respective places to get the total sum.
- Adding the beads in the hundreds place gives 100.
- Adding the beads in the tens place gives 60.
- Adding the beads in the ones place gives 18.
4. Calculating the Total Sum:
- Now, when you add the sums from each place (100 + 60 + 18), you get a total sum of 178.
Therefore, the sum of 123 and 45 on the abacus is 178.
If you start with 302 and add 214 using the abacus, what is the result?- a)516
- b)517
- c)514
- d)515
Correct answer is option 'A'. Can you explain this answer?
If you start with 302 and add 214 using the abacus, what is the result?
a)
516
b)
517
c)
514
d)
515
|
Edgy Education answered |
- Set 302 on the abacus: 3 beads in the hundreds column, 0 beads in the tens column, 2 beads in the ones column.
- Add 214: Add 2 beads to the hundreds column (total 5 beads), 1 bead to the tens column (total 1 bead), and 4 beads to the ones column (total 6 beads).
- The total is 516.
If you start with 150 and add 60 on the abacus, what is the result?- a)210
- b)205
- c)220
- d)215
Correct answer is option 'A'. Can you explain this answer?
If you start with 150 and add 60 on the abacus, what is the result?
a)
210
b)
205
c)
220
d)
215
|
|
Nitin naidu answered |
Calculation on the Abacus:
To find the result of adding 60 to 150 on the abacus, we need to perform the following steps:
1. Starting Value:
- Begin with the initial value of 150 on the abacus.
2. Adding 60:
- Slide the bead representing 60 units to the right on the abacus.
- This action represents adding 60 to the initial value of 150.
3. Calculating the Result:
- The final position of the beads on the abacus will show the result of adding 60 to 150.
4. Final Result:
- After adding 60 to 150 on the abacus, the final result is 210.
Therefore, the correct answer is option A) 210.
To find the result of adding 60 to 150 on the abacus, we need to perform the following steps:
1. Starting Value:
- Begin with the initial value of 150 on the abacus.
2. Adding 60:
- Slide the bead representing 60 units to the right on the abacus.
- This action represents adding 60 to the initial value of 150.
3. Calculating the Result:
- The final position of the beads on the abacus will show the result of adding 60 to 150.
4. Final Result:
- After adding 60 to 150 on the abacus, the final result is 210.
Therefore, the correct answer is option A) 210.
What is the result of adding 78 and 22 on the abacus?- a)100
- b)101
- c)98
- d)99
Correct answer is option 'A'. Can you explain this answer?
What is the result of adding 78 and 22 on the abacus?
a)
100
b)
101
c)
98
d)
99
|
|
Keystone Instructors answered |
- Set 78 on the abacus: 7 beads in the tens column, 8 beads in the ones column.
- Add 22: Add 2 beads to the tens column (total 9 beads), and 2 beads to the ones column (total 10 beads, carry over 1 to the tens column).
- The total is 100.
What is the sum of 67 and 89 on the abacus?- a)156
- b)157
- c)146
- d)154
Correct answer is option 'A'. Can you explain this answer?
What is the sum of 67 and 89 on the abacus?
a)
156
b)
157
c)
146
d)
154
|
Freak Artworks answered |
- Set 67 on the abacus: 6 beads in the tens column, 7 beads in the ones column.
- Add 89: Add 8 beads to the tens column (total 14 beads, carry over 1 to the hundreds column) and 9 beads to the ones column (total 16 beads, carry over 1 to the tens column).
- The total is 156.
If you add 231 and 312 on the abacus, what is the result?- a)543
- b)542
- c)544
- d)541
Correct answer is option 'A'. Can you explain this answer?
If you add 231 and 312 on the abacus, what is the result?
a)
543
b)
542
c)
544
d)
541
|
|
Freak Artworks answered |
- Set 231 on the abacus: 2 beads in the hundreds column, 3 beads in the tens column, 1 bead in the ones column.
- Add 312: Add 3 beads to the hundreds column (total 5 beads), 1 bead to the tens column (total 4 beads), and 2 beads to the ones column (total 3 beads).
- The total is 543.
What is the sum of 5 and 9 using an abacus?
- a)14
- b)15
- c)13
- d)16
Correct answer is option 'A'. Can you explain this answer?
What is the sum of 5 and 9 using an abacus?
a)
14
b)
15
c)
13
d)
16
|
|
Freak Artworks answered |
- Set 5 on the abacus: 5 beads in the ones column.
- Add 9: Add 4 beads to the ones column (total 10 beads, carry over 1 to the tens column) and 4 more beads (total 4 beads in the ones column).
- The total is 14.
What is the sum of 12 and 34 on the abacus?- a)46
- b)48
- c)45
- d)44
Correct answer is option 'A'. Can you explain this answer?
What is the sum of 12 and 34 on the abacus?
a)
46
b)
48
c)
45
d)
44
|
|
Edgy Education answered |
- Set 12 on the abacus: 1 bead in the tens column, 2 beads in the ones column.
- Add 34: Add 3 beads to the tens column (total 4 beads), and 4 beads to the ones column (total 6 beads).
- The total is 46.
Chapter doubts & questions for Addition - Abacus 2025 is part of Class 1 exam preparation. The chapters have been prepared according to the Class 1 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 1 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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Abacus
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