AP 4th Maths Addition Workbook Answers are provided here with complete and easy-to-follow APSCERT Class 4 Maths 2nd Unit Workbook Solutions. This article includes step-by-step answers for addition of 4-digit numbers, estimating the sum of two 4-digit numbers, oral addition, and solving daily life word problems using addition. Prepared according to the latest APSCERT Class 4 Maths workbook, these solutions help students understand addition concepts clearly and improve their calculation, estimation, and problem-solving skills. Students, parents, and teachers can use this guide as a reliable resource for homework, classroom learning, revision, and exam preparation.
📘 Unit 2 - Addition | Workbook Answers
📄 Page 15 — Worksheet 1 (2-digit Addition)
Q1. Do the additions.
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Q2. A box has 48 pencils. If you add 12 more pencils, how many pencils will be there?
Answer:
Pencils in the box = 48
Pencils added = 12
Total pencils = 48 + 12 = 60 pencils
Q3. 45 + 15 = 70. Is this correct answer? If not correct it.
Answer: No, it is not correct.
45 + 15 = 60 (not 70)
Q4. Fill in the blanks.
a) 28 + 33 = 61
b) 39 + 13 = 52
c) 64 + 17 = 81
Q5. Sum of the numbers 59, 76. ( B )
59 + 76 = 135 → Answer: B) 135
📄 Page 16 — Worksheet 2 (Addition of 2-digit Numbers)
Q1. Write the numbers for given number names and do the addition.
a) Seventy + Eighty = 70 + 80 = 150
b) Forty four + Sixty five = 44 + 65 = 109
c) Thirty four + Ninety five = 34 + 95 = 129
d) Ninety + Ten = 90 + 10 = 100
Q2. Chandini scored 42 marks in Maths and 37 marks in English. What is her total score?
Answer:
Marks in Maths = 42
Marks in English = 37
Total marks = 42 + 37 = 79 marks
Q3. In a school library, there are 34 story books and 45 picture books. Find the total number of books.
Answer:
Story books = 34
Picture books = 45
Total books = 34 + 45 = 79 books
Q4. There were 34 passengers in a bus. At the next bus stop, 18 more passengers boarded the bus. How many passengers are in the bus now? ( C )
Answer:
Passengers already in bus = 34
Passengers boarded = 18
Total passengers now = 34 + 18 = 52 → Answer: C) 52
📄 Page 17 — Worksheet 3 (1-digit with 3-digit Numbers)
Q1. By using number line, do the following additions.
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Q2. Do the following addition.
a) 534 + 2 = 536 b) 587 + 6 = 593 c) 698 + 5 = 703 d) 763 + 4 = 767
Q3. Write the answers in the blanks.
a) '5' more than 360 = 365
b) '7' more than 722 = 729
c) '1' more than 162 = 163
Q4. What is the sum of the greatest 3-digit number and the smallest one digit number? ( B )
Answer:
Greatest 3-digit number = 999
Smallest one digit number = 1
Sum = 999 + 1 = 1000 → Answer: B) 1000
📄 Page 18 — Worksheet 4 (2-digit with 3-digit Numbers)
Q1. Do the following additions.
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Q2. Match the following.
| 120 + 6 | → | 126 |
| 646 + 52 | → | 698 |
| 333 + 4 | → | 337 |
| 541 + 44 | → | 585 |
| 900 + 99 | → | 999 |
Q3. There are 245 students in a school. 12 students have newly joined. How many students are there in that school now?
Answer:
Students already in school = 245
Newly joined students = 12
Total students now = 245 + 12 = 257 students
Q4. A library has 509 books. 11 new books are added to them. Find the total number of books.
Answer:
Books already in library = 509
New books added = 11
Total books = 509 + 11 = 520 books
Q5. Which of the following two numbers sum equal to 400? ( C )
A) 385 + 25 = 410 B) 375 + 20 = 395 C) 382 + 18 = 400 ✓ D) 345 + 65 = 410
Answer: C) 382 + 18
📄 Page 19 — Worksheet 5 (3-digit with 3-digit Numbers)
Q1. Write the suitable numbers in boxes.
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(Note: For c) and d), since more than one digit is missing, other correct number combinations that give the same total are also acceptable.)
Q2. Yaswanth has ₹315. His mother gave him ₹250, how much amount Yaswanth has now?
Answer:
Amount Yaswanth had = ₹315
Amount given by mother = ₹250
Total amount now = 315 + 250 = ₹565
Q3. Compare the results of 321 + 123 and 123 + 321. What do you observe?
Answer:
321 + 123 = 444
123 + 321 = 444
Observation: The sum remains the same even when the order of the numbers is changed.
Q4. A godown has 321 Rice bags. If 123 rice bags are added, how many rice bags will be there in the godown?
Answer:
Rice bags already in godown = 321
Rice bags added = 123
Total rice bags = 321 + 123 = 444 bags
📄 Page 20 — Worksheet 6 (Addition of 3-digit Numbers)
Q1. Do the following additions.
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Q2. A student wrote the sum of 472 + 356 as 728. Verify the answer and correct it.
Answer:
472 + 356 = 828 (not 728)
The student's answer is incorrect. The correct sum is 828.
Q3. In 345, 678, 432, 567, which of these two numbers should be added to get more than 1000?
Answer:
678 + 567 = 1245, which is more than 1000.
(Note: 345 + 678 = 1023 and 678 + 432 = 1110 are also more than 1000.)
Q4. Find the sum of the greatest 3-digit number and the smallest 3-digit number. ( A )
Answer:
Greatest 3-digit number = 999
Smallest 3-digit number = 100
Sum = 999 + 100 = 1099 → Answer: A) 1099
📄 Page 21 — Worksheet 7 (Addition with Estimation)
Q1. Estimate the sums rounding each number to the nearest 100.
a) 389 + 514 → 400 + 500 = 900
b) 178 + 124 → 200 + 100 = 300
c) 684 + 217 → 700 + 200 = 900
d) 1249 + 3768 → 1200 + 3800 = 5000
Q2. There are 245 boys and 782 girls in a school. Estimate and write the total number of students.
Answer:
Boys rounded to nearest 100 = 200
Girls rounded to nearest 100 = 800
Estimated total students = 200 + 800 = 1000
Q3. A shopkeeper sold two items worth of ₹398 and ₹612 in a day. Estimate and write the total amount he earned.
Answer:
₹398 rounded to nearest 100 = ₹400
₹612 rounded to nearest 100 = ₹600
Estimated total amount = 400 + 600 = ₹1000
Q4. A student estimated the result of 879 + 421 as 1,400. Is it correct?
Answer:
879 rounded to nearest 100 = 900
421 rounded to nearest 100 = 400
Estimated sum = 900 + 400 = 1300
The student's estimation (1400) is not correct. The correct estimate is 1300.
Q5. Estimate and write any two 3-digit numbers, which sum is 1000.
Answer (example): 520 + 480 = 1000
(Rounded: 500 + 500 = 1000)
📄 Page 22 — Self Assessment
Q1. Do the additions.
a) 324 + 185 = 509
b) 462 + 138 = 600
Q2. In a fruit shop there are 378 guavas, 295 oranges, and 412 mangoes. How many fruits are there in total?
Answer:
Guavas = 378, Oranges = 295, Mangoes = 412
Total fruits = 378 + 295 + 412 = 1085 fruits
Q3. After selling 365 rice bags, 435 bags were remained in the godown. How many rice bags were there at first?
Answer:
Rice bags remained = 435
Rice bags sold = 365
Rice bags at first = 435 + 365 = 800 bags
Q4. Make a word problem using 245 + 375.
Answer (example): Ravi has ₹245 and Sita has ₹375. What is the total amount both of them have?
245 + 375 = 620
Q5. Estimate the sum of 276 and 489 by rounding each number to the nearest hundred. ( C )
Answer:
276 rounded to nearest 100 = 300
489 rounded to nearest 100 = 500
Estimated sum = 300 + 500 = 800 → Answer: C) 800
📄 Page 23 — Self Assessment (continued)
Q6. Fill in the blanks.
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a) 425 + 132 = 557 b) 247 + 187 = 434
Q7. There are 450 kg of rice in a school. After receiving 275 kg of rice, the total weight of rice become 725 kg. (Write the problem in mathematical equation.)
Answer:
Rice already in school = 450 kg
Rice received = 275 kg
Equation: 450 + 275 = 725 kg
Q8. Komaraiah sold 123 pots on Wednesday and 207 pots on Thursday. How many pots he sold in two days?
Answer:
Pots sold on Wednesday = 123
Pots sold on Thursday = 207
Total pots sold = 123 + 207 = 330 pots
Q9. By estimation, circle the answer rounded to nearest 100s.
a) 158 + 271 = 429 → nearest 100 = 400
b) 481 + 8 = 489 → nearest 100 = 500
c) 874 + 111 = 985 → nearest 100 = 1000
