{
  "title": "Addition and Subtraction - Word Problems",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "Easy",
      "question": "Rita had 20 balloons. She bought 10 more. How many balloons does she have now?",
      "options": { "A": "25", "B": "30", "C": "35", "D": "40" },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "Easy",
      "question": "A box has 50 pencils. 20 were used. How many are left?",
      "options": { "A": "20", "B": "25", "C": "30", "D": "35" },
      "correct_answer": "C"
    },
    {
      "id": 3,
      "difficulty": "Easy",
      "question": "A shop had 100 candies. They sold 40. How many remain?",
      "options": { "A": "50", "B": "55", "C": "60", "D": "70" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "Easy",
      "question": "Rohan collected 120 stamps and his sister gave him 30 more. Total stamps?",
      "options": { "A": "140", "B": "150", "C": "160", "D": "170" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "Easy",
      "question": "There are 200 apples. 50 were eaten. How many are left?",
      "options": { "A": "140", "B": "150", "C": "160", "D": "170" },
      "correct_answer": "B"
    },
    {
      "id": 6,
      "difficulty": "Easy",
      "question": "A classroom has 35 boys and 25 girls. Total students?",
      "options": { "A": "50", "B": "55", "C": "60", "D": "70" },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "Easy",
      "question": "A book has 90 pages. Raj read 40. Pages left?",
      "options": { "A": "45", "B": "50", "C": "55", "D": "60" },
      "correct_answer": "B"
    },
    {
      "id": 8,
      "difficulty": "Easy",
      "question": "A basket has 60 oranges. 20 were sold. Remaining?",
      "options": { "A": "40", "B": "35", "C": "30", "D": "25" },
      "correct_answer": "A"
    },
    {
      "id": 9,
      "difficulty": "Easy",
      "question": "A truck carried 100 boxes. 30 boxes were unloaded. How many left?",
      "options": { "A": "60", "B": "65", "C": "70", "D": "75" },
      "correct_answer": "C"
    },
    {
      "id": 10,
      "difficulty": "Easy",
      "question": "A jar has 80 cookies. Mita added 20 more. Total cookies?",
      "options": { "A": "90", "B": "95", "C": "100", "D": "110" },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "Easy",
      "question": "Tom has 15 toy cars. His father gave him 15 more. Total?",
      "options": { "A": "25", "B": "30", "C": "35", "D": "40" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "Easy",
      "question": "A zoo has 120 birds. 20 flew away. How many remain?",
      "options": { "A": "80", "B": "90", "C": "100", "D": "110" },
      "correct_answer": "C"
    },
    {
      "id": 13,
      "difficulty": "Easy",
      "question": "A shop had 55 chocolates. 10 were sold. Remaining?",
      "options": { "A": "35", "B": "40", "C": "45", "D": "50" },
      "correct_answer": "C"
    },
    {
      "id": 14,
      "difficulty": "Easy",
      "question": "A class had 60 students. 10 were absent. Present?",
      "options": { "A": "40", "B": "45", "C": "50", "D": "55" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "Easy",
      "question": "A boy has 25 marbles. He found 5 more. Total?",
      "options": { "A": "25", "B": "28", "C": "30", "D": "35" },
      "correct_answer": "C"
    },
    {
      "id": 16,
      "difficulty": "Easy",
      "question": "There are 70 cups. 20 broke. Remaining?",
      "options": { "A": "40", "B": "45", "C": "50", "D": "55" },
      "correct_answer": "C"
    },
    {
      "id": 17,
      "difficulty": "Easy",
      "question": "A bag has 90 balls. 10 were lost. Remaining balls?",
      "options": { "A": "70", "B": "75", "C": "80", "D": "85" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "Easy",
      "question": "Mina planted 40 flowers and Raju planted 20. Total?",
      "options": { "A": "50", "B": "55", "C": "60", "D": "70" },
      "correct_answer": "C"
    },
    {
      "id": 19,
      "difficulty": "Easy",
      "question": "A shop received 100 toys. Sold 10. Remaining?",
      "options": { "A": "80", "B": "85", "C": "90", "D": "95" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "Easy",
      "question": "A farmer had 50 cows. 5 ran away. Left?",
      "options": { "A": "40", "B": "42", "C": "45", "D": "47" },
      "correct_answer": "C"
    },

    {
      "id": 21,
      "difficulty": "Medium",
      "question": "A shop had 350 apples. It sold 120. How many are left?",
      "options": { "A": "210", "B": "220", "C": "230", "D": "240" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "Medium",
      "question": "A farmer sold 250 of his 600 oranges. How many remain?",
      "options": { "A": "300", "B": "320", "C": "350", "D": "380" },
      "correct_answer": "C"
    },
    {
      "id": 23,
      "difficulty": "Medium",
      "question": "A library had 480 books. They added 120 more. Total?",
      "options": { "A": "500", "B": "580", "C": "600", "D": "620" },
      "correct_answer": "C"
    },
    {
      "id": 24,
      "difficulty": "Medium",
      "question": "A bus had 90 passengers. 35 got down. Remaining?",
      "options": { "A": "45", "B": "50", "C": "55", "D": "60" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "Medium",
      "question": "Ali collected 300 shells and Ayan collected 250. Total?",
      "options": { "A": "500", "B": "520", "C": "540", "D": "550" },
      "correct_answer": "D"
    },
    {
      "id": 26,
      "difficulty": "Medium",
      "question": "A school printed 700 worksheets. 450 were used. How many left?",
      "options": { "A": "230", "B": "240", "C": "250", "D": "260" },
      "correct_answer": "C"
    },
    {
      "id": 27,
      "difficulty": "Medium",
      "question": "A box has 650 crayons. 150 were taken out. Remaining?",
      "options": { "A": "400", "B": "450", "C": "500", "D": "550" },
      "correct_answer": "C"
    },
    {
      "id": 28,
      "difficulty": "Medium",
      "question": "A shop had 800 packets. Sold 300. Remaining?",
      "options": { "A": "400", "B": "450", "C": "500", "D": "550" },
      "correct_answer": "C"
    },
    {
      "id": 29,
      "difficulty": "Medium",
      "question": "A school had 520 bags. Received 180 more. Total bags?",
      "options": { "A": "670", "B": "690", "C": "700", "D": "720" },
      "correct_answer": "C"
    },
    {
      "id": 30,
      "difficulty": "Medium",
      "question": "Ritu had 450 beads. She lost 60. Remaining beads?",
      "options": { "A": "380", "B": "390", "C": "400", "D": "410" },
      "correct_answer": "B"
    },
    {
      "id": 31,
      "difficulty": "Medium",
      "question": "A farmer plucked 600 tomatoes. Sold 200. Remaining?",
      "options": { "A": "350", "B": "380", "C": "400", "D": "450" },
      "correct_answer": "C"
    },
    {
      "id": 32,
      "difficulty": "Medium",
      "question": "A bag had 700 coins. 350 were used. Coins left?",
      "options": { "A": "340", "B": "350", "C": "360", "D": "370" },
      "correct_answer": "B"
    },
    {
      "id": 33,
      "difficulty": "Medium",
      "question": "A class had 320 books. They added 90 more. Total?",
      "options": { "A": "390", "B": "400", "C": "410", "D": "420" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "Medium",
      "question": "A truck carried 950 boxes. It delivered 450. Boxes left?",
      "options": { "A": "450", "B": "470", "C": "500", "D": "520" },
      "correct_answer": "C"
    },
    {
      "id": 35,
      "difficulty": "Medium",
      "question": "A store bought 600 toys. Sold 280. Remaining?",
      "options": { "A": "300", "B": "320", "C": "330", "D": "340" },
      "correct_answer": "B"
    },
    {
      "id": 36,
      "difficulty": "Medium",
      "question": "A man saved 500 rupees. He spent 125. Savings left?",
      "options": { "A": "365", "B": "370", "C": "375", "D": "380" },
      "correct_answer": "C"
    },
    {
      "id": 37,
      "difficulty": "Medium",
      "question": "A bag had 800 balls. 250 were taken. Left?",
      "options": { "A": "540", "B": "550", "C": "560", "D": "570" },
      "correct_answer": "B"
    },
    {
      "id": 38,
      "difficulty": "Medium",
      "question": "A factory made 900 toys. Packed 450. Remaining?",
      "options": { "A": "430", "B": "440", "C": "450", "D": "460" },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "Medium",
      "question": "A shop has 750 pens. Sold 350. Remaining?",
      "options": { "A": "390", "B": "400", "C": "410", "D": "420" },
      "correct_answer": "B"
    },
    {
      "id": 40,
      "difficulty": "Medium",
      "question": "A library had 680 books. Added 250 more. Total?",
      "options": { "A": "910", "B": "920", "C": "930", "D": "940" },
      "correct_answer": "C"
    },

    {
      "id": 41,
      "difficulty": "Hard",
      "question": "A shopkeeper bought 1200 toys and sold 750. How many left?",
      "options": { "A": "430", "B": "440", "C": "450", "D": "460" },
      "correct_answer": "C"
    },
    {
      "id": 42,
      "difficulty": "Hard",
      "question": "A school printed 1500 worksheets. 680 were used. Remaining?",
      "options": { "A": "800", "B": "810", "C": "820", "D": "830" },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "Hard",
      "question": "A farmer had 2000 potatoes. Sold 1250. How many left?",
      "options": { "A": "720", "B": "740", "C": "750", "D": "760" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "Hard",
      "question": "A box had 1750 coins. 850 were used. Coins left?",
      "options": { "A": "850", "B": "870", "C": "880", "D": "900" },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "Hard",
      "question": "A man saved 3000 rupees. He spent 1450. Savings left?",
      "options": { "A": "1550", "B": "1600", "C": "1650", "D": "1700" },
      "correct_answer": "A"
    },
    {
      "id": 46,
      "difficulty": "Hard",
      "question": "A truck carried 2500 boxes. Delivered 1200. Boxes left?",
      "options": { "A": "1250", "B": "1300", "C": "1350", "D": "1400" },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "Hard",
      "question": "A shop bought 1800 pens. Sold 760. Remaining?",
      "options": { "A": "1000", "B": "1020", "C": "1040", "D": "1050" },
      "correct_answer": "C"
    },
    {
      "id": 48,
      "difficulty": "Hard",
      "question": "A factory made 3000 toys. Packed 1870. Remaining?",
      "options": { "A": "1110", "B": "1120", "C": "1130", "D": "1140" },
      "correct_answer": "C"
    },
    {
      "id": 49,
      "difficulty": "Hard",
      "question": "A store received 2200 bottles. Sold 1200. Left?",
      "options": { "A": "980", "B": "1000", "C": "1020", "D": "1050" },
      "correct_answer": "B"
    },
    {
      "id": 50,
      "difficulty": "Hard",
      "question": "A shopkeeper bought 3500 toys. Sold 1400. Remaining?",
      "options": { "A": "2000", "B": "2100", "C": "2200", "D": "2300" },
      "correct_answer": "B"
    },
    {
      "id": 51,
      "difficulty": "Hard",
      "question": "A library had 2800 books. 1450 were issued. Remaining?",
      "options": { "A": "1300", "B": "1350", "C": "1400", "D": "1500" },
      "correct_answer": "B"
    },
    {
      "id": 52,
      "difficulty": "Hard",
      "question": "A truck transported 4000 crates. Unloaded 2750. Left?",
      "options": { "A": "1200", "B": "1220", "C": "1250", "D": "1300" },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "Hard",
      "question": "A shop had 5000 toys. Sold 3450. Remaining?",
      "options": { "A": "1450", "B": "1500", "C": "1550", "D": "1600" },
      "correct_answer": "A"
    },
    {
      "id": 54,
      "difficulty": "Hard",
      "question": "A factory produced 4200 items. 2000 were damaged. Good items?",
      "options": { "A": "1900", "B": "2000", "C": "2100", "D": "2200" },
      "correct_answer": "D"
    },
    {
      "id": 55,
      "difficulty": "Hard",
      "question": "A farmer harvested 3500 mangoes. Sold 2300. Remaining?",
      "options": { "A": "1100", "B": "1150", "C": "1200", "D": "1300" },
      "correct_answer": "C"
    },
    {
      "id": 56,
      "difficulty": "Hard",
      "question": "A man had 2700 rupees. Spent 1350. Money left?",
      "options": { "A": "1300", "B": "1350", "C": "1400", "D": "1500" },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "Hard",
      "question": "A school bought 3200 notebooks. Gave out 1750. Remaining?",
      "options": { "A": "1350", "B": "1400", "C": "1450", "D": "1500" },
      "correct_answer": "A"
    },
    {
      "id": 58,
      "difficulty": "Hard",
      "question": "A shop got 5000 bags. Sold 2800. Remaining?",
      "options": { "A": "2000", "B": "2100", "C": "2200", "D": "2300" },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "Hard",
      "question": "A basket had 2500 fruits. 1250 were eaten. Left?",
      "options": { "A": "1000", "B": "1100", "C": "1200", "D": "1250" },
      "correct_answer": "D"
    },
    {
      "id": 60,
      "difficulty": "Hard",
      "question": "A shopkeeper bought 6000 biscuits. Sold 3500. Remaining?",
      "options": { "A": "2400", "B": "2500", "C": "2600", "D": "2700" },
      "correct_answer": "B"
    }
  ]
}