{
  "title": "Expanding 2-digit Numbers (Place Value: Ones, Tens) - Grade 2",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What is 47 in expanded form? 4️⃣7️⃣", "options": {"A": "40 + 7", "B": "4 + 7", "C": "70 + 4", "D": "47 + 0"}, "correct_answer": "A"},
    {"id": 2, "difficulty": "easy", "question": "How many tens are in the number 63? 🔟", "options": {"A": "3", "B": "6", "C": "0", "D": "63"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "The number 82 means 8 tens and ___ ones. ➕", "options": {"A": "8", "B": "2", "C": "10", "D": "80"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "What is 5 tens and 3 ones? 🤔", "options": {"A": "35", "B": "53", "C": "8", "D": "503"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "Expand 29: 20 + ?", "options": {"A": "2", "B": "9", "C": "20", "D": "90"}, "correct_answer": "B"},
    {"id": 6, "difficulty": "easy", "question": "In 76, which digit is in the tens place? 🔢", "options": {"A": "6", "B": "7", "C": "76", "D": "0"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "What is the expanded form of 15? 1️⃣5️⃣", "options": {"A": "1 + 5", "B": "10 + 5", "C": "5 + 10", "D": "15 + 0"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "How many ones in 40? 1️⃣", "options": {"A": "4", "B": "0", "C": "40", "D": "10"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "Expand 88: 80 + ?", "options": {"A": "8", "B": "80", "C": "88", "D": "0"}, "correct_answer": "A"},
    {"id": 10, "difficulty": "easy", "question": "What is 3 tens and 9 ones? ✏️", "options": {"A": "39", "B": "93", "C": "12", "D": "309"}, "correct_answer": "A"},
    {"id": 11, "difficulty": "easy", "question": "In 54, the digit 4 represents...", "options": {"A": "4 tens", "B": "4 ones", "C": "40", "D": "54"}, "correct_answer": "B"},
    {"id": 12, "difficulty": "easy", "question": "Expand 60: ? + 0", "options": {"A": "6", "B": "60", "C": "0", "D": "10"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "What is 90 + 2? (Hint: it's a number)", "options": {"A": "29", "B": "92", "C": "902", "D": "9"}, "correct_answer": "B"},
    {"id": 14, "difficulty": "easy", "question": "How many tens in 30? 🧐", "options": {"A": "0", "B": "3", "C": "30", "D": "10"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Expand 11: 10 + ?", "options": {"A": "1", "B": "10", "C": "11", "D": "0"}, "correct_answer": "A"},
    {"id": 16, "difficulty": "easy", "question": "What is 7 tens and 0 ones? 7️⃣0️⃣", "options": {"A": "7", "B": "70", "C": "07", "D": "17"}, "correct_answer": "B"},
    {"id": 17, "difficulty": "easy", "question": "In 99, both digits are...", "options": {"A": "Tens", "B": "Ones", "C": "Nine", "D": "Same"}, "correct_answer": "D"},
    {"id": 18, "difficulty": "easy", "question": "Expand 25: 20 + 5. True or false? ✔️❌", "options": {"A": "True", "B": "False", "C": "Maybe", "D": "Don't know"}, "correct_answer": "A"},
    {"id": 19, "difficulty": "easy", "question": "What is 4 tens and 6 ones? 🎯", "options": {"A": "64", "B": "46", "C": "10", "D": "406"}, "correct_answer": "B"},
    {"id": 20, "difficulty": "easy", "question": "How many ones in 10? 1️⃣0️⃣", "options": {"A": "1", "B": "0", "C": "10", "D": "2"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "Which shows the expanded form of 76? 🔍", "options": {"A": "7 + 6", "B": "60 + 7", "C": "70 + 6", "D": "700 + 6"}, "correct_answer": "C"},
    {"id": 22, "difficulty": "medium", "question": "In 94, the digit 9 is in the ____ place.", "options": {"A": "Ones", "B": "Tens", "C": "Hundreds", "D": "Units"}, "correct_answer": "B"},
    {"id": 23, "difficulty": "medium", "question": "What is the value of 8 in 84? 💎", "options": {"A": "8", "B": "80", "C": "84", "D": "4"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "Expand 57 correctly: 📝", "options": {"A": "50 + 7", "B": "5 + 7", "C": "70 + 5", "D": "57 + 0"}, "correct_answer": "A"},
    {"id": 25, "difficulty": "medium", "question": "How many tens and ones in 38? 🔢", "options": {"A": "3 tens, 8 ones", "B": "8 tens, 3 ones", "C": "38 tens", "D": "0 tens, 38 ones"}, "correct_answer": "A"},
    {"id": 26, "difficulty": "medium", "question": "Which number has 6 tens and 2 ones? 🤷‍♀️", "options": {"A": "26", "B": "62", "C": "602", "D": "16"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "The expanded form of 90 is: 🌟", "options": {"A": "9 + 0", "B": "90 + 0", "C": "9 tens + 0 ones", "D": "Both B and C"}, "correct_answer": "D"},
    {"id": 28, "difficulty": "medium", "question": "In 21, the 2 represents: 2️⃣1️⃣", "options": {"A": "2 ones", "B": "2 tens", "C": "20 ones", "D": "21"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "What is missing: 40 + ___ = 48? ➕", "options": {"A": "4", "B": "8", "C": "40", "D": "48"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "Which is NOT expanded form? ❌", "options": {"A": "30 + 5", "B": "3 tens + 5 ones", "C": "35", "D": "30 + 5 ones"}, "correct_answer": "C"},
    {"id": 31, "difficulty": "medium", "question": "How many tens in 75? 🧮", "options": {"A": "5", "B": "7", "C": "75", "D": "0"}, "correct_answer": "B"},
    {"id": 32, "difficulty": "medium", "question": "Expand 66: 60 + 6. What is the value of 6 in tens place? 🤔", "options": {"A": "6", "B": "60", "C": "66", "D": "0"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "Which equals 4 tens + 3 ones? ⚖️", "options": {"A": "34", "B": "43", "C": "7", "D": "403"}, "correct_answer": "B"},
    {"id": 34, "difficulty": "medium", "question": "In 19, which digit is in ones place? 🔎", "options": {"A": "1", "B": "9", "C": "19", "D": "0"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "What is 80 + 7 in number form? 🔢", "options": {"A": "87", "B": "78", "C": "807", "D": "15"}, "correct_answer": "A"},
    {"id": 36, "difficulty": "medium", "question": "Expand 12: 10 + 2. How many ones total? 1️⃣2️⃣", "options": {"A": "1", "B": "2", "C": "3", "D": "12"}, "correct_answer": "B"},
    {"id": 37, "difficulty": "medium", "question": "Which shows 5 tens? 🖐️", "options": {"A": "50", "B": "5", "C": "15", "D": "05"}, "correct_answer": "A"},
    {"id": 38, "difficulty": "medium", "question": "What is the expanded form of 100? 💯", "options": {"A": "10 + 0", "B": "100 + 0", "C": "10 tens + 0 ones", "D": "Both B and C"}, "correct_answer": "D"},
    {"id": 39, "difficulty": "medium", "question": "In 77, both 7s have different values. True? ✔️", "options": {"A": "True", "B": "False", "C": "Maybe", "D": "Same value"}, "correct_answer": "A"},
    {"id": 40, "difficulty": "medium", "question": "What is 9 tens and 9 ones? 9️⃣9️⃣", "options": {"A": "18", "B": "99", "C": "909", "D": "81"}, "correct_answer": "B"},
    {"id": 41, "difficulty": "medium", "question": "Expand 83: ? + 3", "options": {"A": "8", "B": "80", "C": "83", "D": "30"}, "correct_answer": "B"},
    {"id": 42, "difficulty": "medium", "question": "How many ones in 6 tens? 🤷‍♂️", "options": {"A": "6", "B": "60", "C": "0", "D": "10"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "medium", "question": "Which is correct for 42? ✅", "options": {"A": "4 ones + 2 tens", "B": "40 + 2", "C": "2 + 40", "D": "4 + 2"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "What is the value of 5 in 59? 🎯", "options": {"A": "5", "B": "50", "C": "59", "D": "9"}, "correct_answer": "B"},
    {"id": 45, "difficulty": "medium", "question": "Expand 70: 7 tens + ? ones", "options": {"A": "7", "B": "0", "C": "70", "D": "10"}, "correct_answer": "B"},
    {"id": 46, "difficulty": "medium", "question": "How many tens in 91? 9️⃣1️⃣", "options": {"A": "9", "B": "1", "C": "91", "D": "19"}, "correct_answer": "A"},
    {"id": 47, "difficulty": "medium", "question": "Which equals 30 + 4? ➕", "options": {"A": "34", "B": "43", "C": "7", "D": "304"}, "correct_answer": "A"},
    {"id": 48, "difficulty": "medium", "question": "In 28, the 8 means: ✨", "options": {"A": "8 tens", "B": "8 ones", "C": "80", "D": "28"}, "correct_answer": "B"},
    {"id": 49, "difficulty": "medium", "question": "What is 2 tens and 7 ones? 📊", "options": {"A": "27", "B": "72", "C": "9", "D": "207"}, "correct_answer": "A"},
    {"id": 50, "difficulty": "medium", "question": "Expand 95: 90 + ?", "options": {"A": "5", "B": "9", "C": "90", "D": "95"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "How many ones in 50? 🤔", "options": {"A": "5", "B": "0", "C": "50", "D": "10"}, "correct_answer": "B"},
    {"id": 52, "difficulty": "medium", "question": "Which shows 8 tens and 4 ones? 🎨", "options": {"A": "48", "B": "84", "C": "12", "D": "804"}, "correct_answer": "B"},
    {"id": 53, "difficulty": "medium", "question": "What is the expanded form of 33? 3️⃣3️⃣", "options": {"A": "3 + 3", "B": "30 + 3", "C": "33 + 0", "D": "3 tens + 3 ones"}, "correct_answer": "D"},
    {"id": 54, "difficulty": "medium", "question": "In 60, the 6 represents: 6️⃣0️⃣", "options": {"A": "6 ones", "B": "6 tens", "C": "60 ones", "D": "0 tens"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "medium", "question": "What is 70 + 8? (Number form)", "options": {"A": "78", "B": "87", "C": "708", "D": "15"}, "correct_answer": "A"},
    {"id": 56, "difficulty": "medium", "question": "Expand 14: 10 + 4. Value of 1? 🔢", "options": {"A": "1", "B": "10", "C": "14", "D": "4"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "Which equals 5 tens? ✋", "options": {"A": "50", "B": "5", "C": "15", "D": "05"}, "correct_answer": "A"},
    {"id": 58, "difficulty": "medium", "question": "How many tens in 45? 🧐", "options": {"A": "4", "B": "5", "C": "45", "D": "9"}, "correct_answer": "A"},
    {"id": 59, "difficulty": "medium", "question": "What is 6 tens and 0 ones? 🎲", "options": {"A": "6", "B": "60", "C": "06", "D": "66"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "medium", "question": "Expand 22: 20 + 2. True? ✔️", "options": {"A": "Yes", "B": "No", "C": "Maybe", "D": "22+0"}, "correct_answer": "A"},
    {"id": 61, "difficulty": "medium", "question": "In 79, which digit shows tens? 7️⃣9️⃣", "options": {"A": "7", "B": "9", "C": "Both", "D": "None"}, "correct_answer": "A"},
    {"id": 62, "difficulty": "medium", "question": "What is the value of 3 in 36? 💫", "options": {"A": "3", "B": "30", "C": "36", "D": "6"}, "correct_answer": "B"},
    {"id": 63, "difficulty": "medium", "question": "Which is expanded form of 67? 📈", "options": {"A": "60 + 7", "B": "6 + 7", "C": "70 + 6", "D": "67 + 0"}, "correct_answer": "A"},
    {"id": 64, "difficulty": "medium", "question": "How many tens and ones in 51? 🔍", "options": {"A": "5 tens, 1 one", "B": "1 ten, 5 ones", "C": "51 tens", "D": "0 tens, 51 ones"}, "correct_answer": "A"},
    {"id": 65, "difficulty": "medium", "question": "What number has 7 tens and 8 ones? 🤔", "options": {"A": "78", "B": "87", "C": "15", "D": "708"}, "correct_answer": "A"},
    {"id": 66, "difficulty": "medium", "question": "Expand 90: 90 + 0. How many tens? 🔟", "options": {"A": "0", "B": "9", "C": "90", "D": "10"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "medium", "question": "In 23, the 3 represents: 🎯", "options": {"A": "3 tens", "B": "3 ones", "C": "30", "D": "23"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "What is missing: 20 + ___ = 29? ❓", "options": {"A": "2", "B": "9", "C": "20", "D": "29"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "medium", "question": "Which is NOT correct expanded form? 🚫", "options": {"A": "40 + 9", "B": "4 tens + 9 ones", "C": "49", "D": "40 + 9 ones"}, "correct_answer": "C"},
    {"id": 70, "difficulty": "medium", "question": "How many tens in 88? 🎱🎱", "options": {"A": "8", "B": "88", "C": "0", "D": "16"}, "correct_answer": "A"},
    {"id": 71, "difficulty": "medium", "question": "Expand 44: 40 + 4. Value of first 4? 📍", "options": {"A": "4", "B": "40", "C": "44", "D": "0"}, "correct_answer": "B"},
    {"id": 72, "difficulty": "medium", "question": "Which equals 8 tens + 1 one? ➕", "options": {"A": "18", "B": "81", "C": "9", "D": "801"}, "correct_answer": "B"},
    {"id": 73, "difficulty": "medium", "question": "In 17, which digit in ones place? 🔎", "options": {"A": "1", "B": "7", "C": "17", "D": "0"}, "correct_answer": "B"},
    {"id": 74, "difficulty": "medium", "question": "What is 60 + 4 in number form? 🔢", "options": {"A": "64", "B": "46", "C": "604", "D": "10"}, "correct_answer": "A"},
    {"id": 75, "difficulty": "medium", "question": "Expand 18: 10 + 8. Total ones? 1️⃣8️⃣", "options": {"A": "1", "B": "8", "C": "9", "D": "18"}, "correct_answer": "B"},
    {"id": 76, "difficulty": "medium", "question": "Which shows 3 tens? 🎪", "options": {"A": "30", "B": "3", "C": "13", "D": "03"}, "correct_answer": "A"},
    {"id": 77, "difficulty": "medium", "question": "What is expanded form of 55? 🎯", "options": {"A": "5 + 5", "B": "50 + 5", "C": "55 + 0", "D": "5 tens + 5 ones"}, "correct_answer": "D"},
    {"id": 78, "difficulty": "medium", "question": "In 66, both 6s have same value? ⚖️", "options": {"A": "Yes", "B": "No", "C": "Maybe", "D": "66"}, "correct_answer": "B"},
    {"id": 79, "difficulty": "medium", "question": "What is 1 ten and 9 ones? 🎁", "options": {"A": "19", "B": "91", "C": "10", "D": "109"}, "correct_answer": "A"},
    {"id": 80, "difficulty": "medium", "question": "Expand 73: ? + 3", "options": {"A": "7", "B": "70", "C": "73", "D": "30"}, "correct_answer": "B"},
    {"id": 81, "difficulty": "hard", "question": "If you have 4 tens and 12 ones, what is the number? 🔢", "options": {"A": "52", "B": "42", "C": "412", "D": "16"}, "correct_answer": "A"},
    {"id": 82, "difficulty": "hard", "question": "The sum of the tens digit and the ones digit of a number is 9. The tens digit is 2 more than the ones digit. What is the expanded form? ➕", "options": {"A": "50 + 4", "B": "60 + 3", "C": "40 + 5", "D": "30 + 6"}, "correct_answer": "B"},
    {"id": 83, "difficulty": "hard", "question": "In number 48, if you swap the digits, what is the new expanded form? 🔄", "options": {"A": "80 + 4", "B": "40 + 8", "C": "8 + 40", "D": "4 + 80"}, "correct_answer": "A"},
    {"id": 84, "difficulty": "hard", "question": "A number has 3 tens. The ones digit is double the tens digit. What is the number? ✖️2️⃣", "options": {"A": "36", "B": "63", "C": "33", "D": "30"}, "correct_answer": "A"},
    {"id": 85, "difficulty": "hard", "question": "What is 2 tens + 15 ones in standard form? 📐", "options": {"A": "35", "B": "25", "C": "215", "D": "17"}, "correct_answer": "A"},
    {"id": 86, "difficulty": "hard", "question": "The difference between tens digit and ones digit in 72 is 5. If you reverse digits, what is new number? ➖", "options": {"A": "27", "B": "72", "C": "77", "D": "22"}, "correct_answer": "A"},
    {"id": 87, "difficulty": "hard", "question": "What is 5 tens + 5 tens in expanded form? 🖐️🖐️", "options": {"A": "50 + 50", "B": "100", "C": "10 tens", "D": "All of these"}, "correct_answer": "D"},
    {"id": 88, "difficulty": "hard", "question": "A number's ones digit is 0. Its tens digit is 3 more than 5. What is number? 🔢", "options": {"A": "80", "B": "30", "C": "50", "D": "85"}, "correct_answer": "A"},
    {"id": 89, "difficulty": "hard", "question": "If you add 2 tens to 3 tens and 4 ones, what do you get in expanded form? ➕", "options": {"A": "50 + 4", "B": "30 + 4", "C": "70 + 4", "D": "90 + 4"}, "correct_answer": "A"},
    {"id": 90, "difficulty": "hard", "question": "In 99, the left 9 is worth how much more than right 9? 💰", "options": {"A": "90 more", "B": "9 more", "C": "Same", "D": "81 more"}, "correct_answer": "D"},
    {"id": 91, "difficulty": "hard", "question": "What is 3 tens + 4 ones + 2 tens? 🧮", "options": {"A": "34 + 20 = 54", "B": "30 + 4 + 20 = 54", "C": "50 + 4 = 54", "D": "All are correct"}, "correct_answer": "D"},
    {"id": 92, "difficulty": "hard", "question": "A number has equal tens and ones digits. Their sum is 8. What is expanded form? ⚖️", "options": {"A": "40 + 4", "B": "30 + 3", "C": "20 + 2", "D": "10 + 1"}, "correct_answer": "A"},
    {"id": 93, "difficulty": "hard", "question": "What is 10 tens in expanded form? 🔟🔟", "options": {"A": "100 + 0", "B": "10 + 0", "C": "100", "D": "10 tens + 0 ones"}, "correct_answer": "D"},
    {"id": 94, "difficulty": "hard", "question": "If a number has 6 ones and the tens digit is 1 less than ones digit, what is number? 🔽", "options": {"A": "56", "B": "65", "C": "46", "D": "64"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "What is 7 tens + 13 ones in standard form? 📏", "options": {"A": "83", "B": "73", "C": "713", "D": "20"}, "correct_answer": "A"},
    {"id": 96, "difficulty": "hard", "question": "The number is between 40 and 50. Ones digit is 2 more than tens digit. What is expanded form? 🔍", "options": {"A": "40 + 6", "B": "40 + 5", "C": "40 + 7", "D": "40 + 8"}, "correct_answer": "A"},
    {"id": 97, "difficulty": "hard", "question": "If you subtract 1 ten from 5 tens and 9 ones, what remains in expanded form? ➖", "options": {"A": "40 + 9", "B": "50 + 8", "C": "40 + 8", "D": "30 + 9"}, "correct_answer": "A"},
    {"id": 98, "difficulty": "hard", "question": "What is 4 tens + 3 tens + 2 ones? ✨", "options": {"A": "70 + 2", "B": "40 + 30 + 2", "C": "72", "D": "All are correct"}, "correct_answer": "D"},
    {"id": 99, "difficulty": "hard", "question": "A number's tens digit is twice the ones digit. Ones digit is 3. What is number? ✖️2️⃣", "options": {"A": "36", "B": "63", "C": "33", "D": "66"}, "correct_answer": "B"},
    {"id": 100, "difficulty": "hard", "question": "What is 20 + 20 + 5 in expanded and standard form? 🎯", "options": {"A": "40 + 5 = 45", "B": "20 + 20 + 5 = 45", "C": "4 tens + 5 ones = 45", "D": "All are correct"}, "correct_answer": "D"}
  ]
}