{
  "title": "Understanding Ones and Tens (Place Value: Ones, Tens) - Grade 2",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "How many ones make one ten? 1️⃣0️⃣", "options": {"A": "1", "B": "5", "C": "10", "D": "100"}, "correct_answer": "C"},
    {"id": 2, "difficulty": "easy", "question": "In the number 36, which digit tells the number of ones? 3️⃣6️⃣", "options": {"A": "3", "B": "6", "C": "Both", "D": "None"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "What does the '2' represent in 24? 🤷‍♂️", "options": {"A": "2 ones", "B": "2 tens", "C": "24 ones", "D": "4 tens"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "If you have 3 tens, how many ones is that? 🤔", "options": {"A": "3", "B": "30", "C": "300", "D": "13"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "How many tens are in 50? 5️⃣0️⃣", "options": {"A": "0", "B": "5", "C": "50", "D": "1"}, "correct_answer": "B"},
    {"id": 6, "difficulty": "easy", "question": "In 17, how many ones? 🔢", "options": {"A": "1", "B": "7", "C": "17", "D": "0"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "What does 4 tens mean? 🖐️", "options": {"A": "4", "B": "40", "C": "14", "D": "44"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "In 99, how many tens? 9️⃣9️⃣", "options": {"A": "9", "B": "99", "C": "0", "D": "18"}, "correct_answer": "A"},
    {"id": 9, "difficulty": "easy", "question": "How many ones in 8 tens? 🔟", "options": {"A": "8", "B": "80", "C": "0", "D": "88"}, "correct_answer": "B"},
    {"id": 10, "difficulty": "easy", "question": "What is 1 ten and 5 ones? 🎯", "options": {"A": "15", "B": "51", "C": "6", "D": "105"}, "correct_answer": "A"},
    {"id": 11, "difficulty": "easy", "question": "In 70, how many ones? 🎲", "options": {"A": "7", "B": "0", "C": "70", "D": "10"}, "correct_answer": "B"},
    {"id": 12, "difficulty": "easy", "question": "How many tens in 20? 2️⃣0️⃣", "options": {"A": "0", "B": "2", "C": "20", "D": "1"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "What does 6 ones mean? ✨", "options": {"A": "6", "B": "60", "C": "16", "D": "66"}, "correct_answer": "A"},
    {"id": 14, "difficulty": "easy", "question": "In 45, the 4 is in which place? 🏠", "options": {"A": "Ones", "B": "Tens", "C": "Hundreds", "D": "Units"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "How many tens make 100? 💯", "options": {"A": "1", "B": "10", "C": "100", "D": "0"}, "correct_answer": "B"},
    {"id": 16, "difficulty": "easy", "question": "What is 0 tens and 9 ones? 🚫", "options": {"A": "9", "B": "90", "C": "09", "D": "0"}, "correct_answer": "A"},
    {"id": 17, "difficulty": "easy", "question": "In 81, which digit shows tens? 🔍", "options": {"A": "8", "B": "1", "C": "Both", "D": "None"}, "correct_answer": "A"},
    {"id": 18, "difficulty": "easy", "question": "How many ones in 2 tens? 🔟🔟", "options": {"A": "2", "B": "20", "C": "12", "D": "22"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "What is 5 tens and 0 ones? 🎪", "options": {"A": "5", "B": "50", "C": "05", "D": "0"}, "correct_answer": "B"},
    {"id": 20, "difficulty": "easy", "question": "In 33, both digits are 3. Do they mean the same? 🔄", "options": {"A": "Yes", "B": "No", "C": "Maybe", "D": "33"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "Which number has 7 tens and 4 ones? 🧐", "options": {"A": "47", "B": "74", "C": "407", "D": "704"}, "correct_answer": "B"},
    {"id": 22, "difficulty": "medium", "question": "What is the value of the digit 8 in 84? 💎", "options": {"A": "8", "B": "80", "C": "84", "D": "4"}, "correct_answer": "B"},
    {"id": 23, "difficulty": "medium", "question": "If a number has 9 tens, how many ones total? 🤔", "options": {"A": "9", "B": "90", "C": "0", "D": "99"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "In 57, the digit 5 is worth how much? 🎯", "options": {"A": "5", "B": "50", "C": "57", "D": "7"}, "correct_answer": "B"},
    {"id": 25, "difficulty": "medium", "question": "How many tens are equal to 70 ones? 🔢", "options": {"A": "7", "B": "70", "C": "0", "D": "700"}, "correct_answer": "A"},
    {"id": 26, "difficulty": "medium", "question": "What number has 3 tens and 12 ones? 🧮", "options": {"A": "312", "B": "42", "C": "15", "D": "33"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "In 60, the 6 means 6 what? ❓", "options": {"A": "Ones", "B": "Tens", "C": "Hundreds", "D": "Sixties"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "How many ones in 4 tens and 5 ones? ➕", "options": {"A": "9", "B": "45", "C": "54", "D": "20"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "What is the place value of 2 in 29? 🏠", "options": {"A": "Ones", "B": "Tens", "C": "Twos", "D": "Twenty"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "If you have 25 ones, how many tens and ones? 🔄", "options": {"A": "2 tens, 5 ones", "B": "5 tens, 2 ones", "C": "25 tens", "D": "0 tens, 25 ones"}, "correct_answer": "A"},
    {"id": 31, "difficulty": "medium", "question": "Which is greater: 3 tens or 30 ones? ⚖️", "options": {"A": "3 tens", "B": "30 ones", "C": "Equal", "D": "Can't compare"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "In 88, the left 8 is worth how much more than right 8? 💰", "options": {"A": "80 more", "B": "8 more", "C": "Same", "D": "72 more"}, "correct_answer": "D"},
    {"id": 33, "difficulty": "medium", "question": "What number has 0 tens and 10 ones? 🎲", "options": {"A": "10", "B": "01", "C": "0", "D": "100"}, "correct_answer": "A"},
    {"id": 34, "difficulty": "medium", "question": "How many tens in 100 ones? 💯", "options": {"A": "1", "B": "10", "C": "100", "D": "0"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "In 91, the 9 represents what value? ✨", "options": {"A": "9", "B": "90", "C": "91", "D": "19"}, "correct_answer": "B"},
    {"id": 36, "difficulty": "medium", "question": "What is 6 tens + 8 ones in number form? 🔢", "options": {"A": "68", "B": "86", "C": "14", "D": "608"}, "correct_answer": "A"},
    {"id": 37, "difficulty": "medium", "question": "How many ones are in 5 tens and 3 ones? 🤷‍♀️", "options": {"A": "8", "B": "53", "C": "35", "D": "503"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "In 40, what is the place value of 4? 📍", "options": {"A": "Ones", "B": "Tens", "C": "Forty", "D": "Zero"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "What does 7 tens equal in ones? 🔢", "options": {"A": "7", "B": "70", "C": "700", "D": "17"}, "correct_answer": "B"},
    {"id": 40, "difficulty": "medium", "question": "Which number has 2 tens and 15 ones? 🧩", "options": {"A": "215", "B": "35", "C": "152", "D": "17"}, "correct_answer": "B"},
    {"id": 41, "difficulty": "medium", "question": "In 77, how much is the tens digit worth? 🏆", "options": {"A": "7", "B": "70", "C": "77", "D": "0"}, "correct_answer": "B"},
    {"id": 42, "difficulty": "medium", "question": "What is 10 tens in ones? 🔟🔟", "options": {"A": "10", "B": "100", "C": "20", "D": "1000"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "medium", "question": "How many tens in 85 ones? 🧐", "options": {"A": "8", "B": "5", "C": "85", "D": "0"}, "correct_answer": "A"},
    {"id": 44, "difficulty": "medium", "question": "In 62, which digit has greater value? >", "options": {"A": "6", "B": "2", "C": "Equal", "D": "62"}, "correct_answer": "A"},
    {"id": 45, "difficulty": "medium", "question": "What number has 4 tens and 4 ones? 🎨", "options": {"A": "44", "B": "8", "C": "404", "D": "84"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "medium", "question": "How many ones in 9 tens? 9️⃣", "options": {"A": "9", "B": "90", "C": "0", "D": "99"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "medium", "question": "In 30, the 3 means 3 what? ❓", "options": {"A": "Threes", "B": "Tens", "C": "Ones", "D": "Thirty"}, "correct_answer": "B"},
    {"id": 48, "difficulty": "medium", "question": "What is 8 tens minus 80 ones? ➖", "options": {"A": "0", "B": "8", "C": "80", "D": "160"}, "correct_answer": "A"},
    {"id": 49, "difficulty": "medium", "question": "Which shows 5 tens and 7 ones? ✏️", "options": {"A": "57", "B": "75", "C": "12", "D": "507"}, "correct_answer": "A"},
    {"id": 50, "difficulty": "medium", "question": "In 19, how many tens? 🔢", "options": {"A": "1", "B": "9", "C": "19", "D": "0"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "What is the value of 0 in 50? 🚫", "options": {"A": "0", "B": "50", "C": "5", "D": "10"}, "correct_answer": "A"},
    {"id": 52, "difficulty": "medium", "question": "How many tens in 67 ones? 🧮", "options": {"A": "6", "B": "7", "C": "67", "D": "0"}, "correct_answer": "A"},
    {"id": 53, "difficulty": "medium", "question": "In 42, the 2 represents what? 🔍", "options": {"A": "2 tens", "B": "2 ones", "C": "20", "D": "42"}, "correct_answer": "B"},
    {"id": 54, "difficulty": "medium", "question": "What is 3 tens + 9 ones? ➕", "options": {"A": "39", "B": "93", "C": "12", "D": "309"}, "correct_answer": "A"},
    {"id": 55, "difficulty": "medium", "question": "How many ones equal 6 tens? ⚖️", "options": {"A": "6", "B": "60", "C": "0", "D": "66"}, "correct_answer": "B"},
    {"id": 56, "difficulty": "medium", "question": "In 75, which place is 5 in? 🏠", "options": {"A": "Tens", "B": "Ones", "C": "Fives", "D": "Seventy"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "What number has 10 tens? 🔟🔟", "options": {"A": "10", "B": "100", "C": "1010", "D": "0"}, "correct_answer": "B"},
    {"id": 58, "difficulty": "medium", "question": "How many tens in 90 ones? 9️⃣0️⃣", "options": {"A": "9", "B": "0", "C": "90", "D": "10"}, "correct_answer": "A"},
    {"id": 59, "difficulty": "medium", "question": "In 28, the digit in tens place is? 📍", "options": {"A": "2", "B": "8", "C": "28", "D": "0"}, "correct_answer": "A"},
    {"id": 60, "difficulty": "medium", "question": "What is 0 tens + 25 ones? 🎪", "options": {"A": "25", "B": "025", "C": "0", "D": "250"}, "correct_answer": "A"},
    {"id": 61, "difficulty": "medium", "question": "Which is correct: 4 tens = ? ones", "options": {"A": "4", "B": "40", "C": "14", "D": "44"}, "correct_answer": "B"},
    {"id": 62, "difficulty": "medium", "question": "In 93, how much is 9 worth? 💎", "options": {"A": "9", "B": "90", "C": "93", "D": "3"}, "correct_answer": "B"},
    {"id": 63, "difficulty": "medium", "question": "What number has 8 tens and 11 ones? 🧩", "options": {"A": "811", "B": "91", "C": "19", "D": "88"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "medium", "question": "How many tens make 80 ones? 🔢", "options": {"A": "8", "B": "80", "C": "0", "D": "800"}, "correct_answer": "A"},
    {"id": 65, "difficulty": "medium", "question": "In 64, the 6 means? ✨", "options": {"A": "6 ones", "B": "6 tens", "C": "60 ones", "D": "64"}, "correct_answer": "B"},
    {"id": 66, "difficulty": "medium", "question": "What is 7 tens + 0 ones? 🎯", "options": {"A": "7", "B": "70", "C": "07", "D": "0"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "medium", "question": "How many ones in 2 tens and 8 ones? 🤔", "options": {"A": "10", "B": "28", "C": "82", "D": "208"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "In 55, both digits are same but values? 🔄", "options": {"A": "Same", "B": "Different", "C": "Equal", "D": "55"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "medium", "question": "What does 1 ten equal in ones? 🔟", "options": {"A": "1", "B": "10", "C": "11", "D": "100"}, "correct_answer": "B"},
    {"id": 70, "difficulty": "medium", "question": "Which number has 9 tens and 6 ones? 🏆", "options": {"A": "69", "B": "96", "C": "15", "D": "906"}, "correct_answer": "B"},
    {"id": 71, "difficulty": "medium", "question": "In 20, how many tens? 2️⃣0️⃣", "options": {"A": "0", "B": "2", "C": "20", "D": "1"}, "correct_answer": "B"},
    {"id": 72, "difficulty": "medium", "question": "What is 5 tens + 13 ones? 🧮", "options": {"A": "513", "B": "63", "C": "18", "D": "53"}, "correct_answer": "B"},
    {"id": 73, "difficulty": "medium", "question": "How many tens in 47 ones? 🔍", "options": {"A": "4", "B": "7", "C": "47", "D": "0"}, "correct_answer": "A"},
    {"id": 74, "difficulty": "medium", "question": "In 81, what is place value of 1? 🏠", "options": {"A": "Ones", "B": "Tens", "C": "Eighty", "D": "One"}, "correct_answer": "A"},
    {"id": 75, "difficulty": "medium", "question": "What is 10 ones + 4 tens? ➕", "options": {"A": "14", "B": "50", "C": "41", "D": "104"}, "correct_answer": "B"},
    {"id": 76, "difficulty": "medium", "question": "How many ones equal 10 tens? 🔟🔟", "options": {"A": "10", "B": "100", "C": "20", "D": "1000"}, "correct_answer": "B"},
    {"id": 77, "difficulty": "medium", "question": "In 39, the 3 means 3 what? ❓", "options": {"A": "Threes", "B": "Tens", "C": "Ones", "D": "Thirty-nine"}, "correct_answer": "B"},
    {"id": 78, "difficulty": "medium", "question": "What number has 0 tens and 20 ones? 🎲", "options": {"A": "20", "B": "02", "C": "0", "D": "200"}, "correct_answer": "A"},
    {"id": 79, "difficulty": "medium", "question": "Which is greater: 40 ones or 4 tens? ⚖️", "options": {"A": "40 ones", "B": "4 tens", "C": "Equal", "D": "Can't tell"}, "correct_answer": "C"},
    {"id": 80, "difficulty": "medium", "question": "In 100, how many tens? 💯", "options": {"A": "1", "B": "10", "C": "100", "D": "0"}, "correct_answer": "B"},
    {"id": 81, "difficulty": "hard", "question": "A number has 5 more ones than tens. The tens digit is 3. What is the number? 🔢", "options": {"A": "35", "B": "38", "C": "53", "D": "83"}, "correct_answer": "B"},
    {"id": 82, "difficulty": "hard", "question": "In a number, the tens digit is double the ones digit. The ones digit is 3. What is the number? ✖️2️⃣", "options": {"A": "36", "B": "63", "C": "33", "D": "66"}, "correct_answer": "B"},
    {"id": 83, "difficulty": "hard", "question": "What is the sum of the tens digit and ones digit in 79? ➕", "options": {"A": "16", "B": "79", "C": "70", "D": "9"}, "correct_answer": "A"},
    {"id": 84, "difficulty": "hard", "question": "If you have 4 tens and 15 ones, how many tens and ones total? 🧮", "options": {"A": "5 tens 5 ones", "B": "4 tens 15 ones", "C": "55 ones", "D": "All of above"}, "correct_answer": "D"},
    {"id": 85, "difficulty": "hard", "question": "In 88, if you subtract the ones digit from tens digit value, what do you get? ➖", "options": {"A": "0", "B": "72", "C": "80", "D": "8"}, "correct_answer": "B"},
    {"id": 86, "difficulty": "hard", "question": "What number has tens digit that is 3 less than ones digit? Ones digit is 9. 🔽", "options": {"A": "69", "B": "96", "C": "39", "D": "93"}, "correct_answer": "A"},
    {"id": 87, "difficulty": "hard", "question": "The difference between the values of digits in 51 is? ➖", "options": {"A": "4", "B": "46", "C": "49", "D": "6"}, "correct_answer": "C"},
    {"id": 88, "difficulty": "hard", "question": "What number has equal tens and ones digits that sum to 8? ⚖️", "options": {"A": "44", "B": "88", "C": "80", "D": "08"}, "correct_answer": "A"},
    {"id": 89, "difficulty": "hard", "question": "In 27, if you swap the digits, what is the difference in values? 🔄", "options": {"A": "45", "B": "54", "C": "27", "D": "72"}, "correct_answer": "A"},
    {"id": 90, "difficulty": "hard", "question": "What is 12 tens in ones? 🔢", "options": {"A": "12", "B": "120", "C": "102", "D": "21"}, "correct_answer": "B"},
    {"id": 91, "difficulty": "hard", "question": "A number's ones digit is half of tens digit. Tens digit is 8. What number? ➗", "options": {"A": "84", "B": "48", "C": "82", "D": "28"}, "correct_answer": "A"},
    {"id": 92, "difficulty": "hard", "question": "What is the product of tens digit and ones digit in 36? ✖️", "options": {"A": "9", "B": "18", "C": "36", "D": "3"}, "correct_answer": "B"},
    {"id": 93, "difficulty": "hard", "question": "In 90, how many more ones needed to make 100? ➕", "options": {"A": "10", "B": "90", "C": "100", "D": "0"}, "correct_answer": "A"},
    {"id": 94, "difficulty": "hard", "question": "What number has tens digit that is sum of ones digit and 2? Ones digit is 5. ➕2️⃣", "options": {"A": "57", "B": "75", "C": "25", "D": "52"}, "correct_answer": "B"},
    {"id": 95, "difficulty": "hard", "question": "The value of tens digit in 67 is how many times the ones digit? ✖️", "options": {"A": "6 times", "B": "10 times", "C": "60 times", "D": "Same"}, "correct_answer": "B"},
    {"id": 96, "difficulty": "hard", "question": "What is 3 tens + 4 tens + 5 ones? ➕➕", "options": {"A": "75", "B": "70 + 5", "C": "7 tens 5 ones", "D": "All correct"}, "correct_answer": "D"},
    {"id": 97, "difficulty": "hard", "question": "In 49, if you add the place values, what do you get? ➕", "options": {"A": "13", "B": "49", "C": "40 + 9 = 49", "D": "94"}, "correct_answer": "C"},
    {"id": 98, "difficulty": "hard", "question": "What number has ones digit that is triple the tens digit? Tens digit is 2. ✖️3️⃣", "options": {"A": "23", "B": "26", "C": "32", "D": "62"}, "correct_answer": "B"},
    {"id": 99, "difficulty": "hard", "question": "The difference between place values in 91 is? ➖", "options": {"A": "8", "B": "82", "C": "90", "D": "19"}, "correct_answer": "B"},
    {"id": 100, "difficulty": "hard", "question": "What is 25 tens in standard form? 🔢", "options": {"A": "25", "B": "250", "C": "205", "D": "025"}, "correct_answer": "B"}
  ]
}