Place Value Detective

{
"finish": "You used hundreds, tens and ones to solve every clue.",
"steps": [
{
"question": "Kato has 326 exercise books. Which digit tells us how many hundreds there are?",
"card": "326 = ___ hundreds, ___ tens, ___ ones",
"choices": ["3", "2", "6"],
"answer": 0,
"good": "Correct. The 3 is in the hundreds place.",
"help": "Look at the digit furthest to the left. That is the hundreds place."
},
{
"question": "How many tens are in 326?",
"card": "326 = 3 hundreds, ___ tens, 6 ones",
"choices": ["2 tens", "3 tens", "6 tens"],
"answer": 0,
"good": "Yes. The 2 is in the tens place.",
"help": "The middle digit tells us the number of tens."
},
{
"question": "What number is made from 4 hundreds, 5 tens and 8 ones?",
"card": "4 hundreds + 5 tens + 8 ones",
"choices": ["458", "485", "548"],
"answer": 0,
"good": "Excellent. 4 hundreds, 5 tens and 8 ones make 458.",
"help": "Write the hundreds digit first, then tens, then ones."
},
{
"question": "Kato has 326 books and receives 100 more. How many books does he have now?",
"card": "326 + 100 = ?",
"choices": ["336", "426", "3260"],
"answer": 1,
"good": "Brilliant. Adding 100 changes the hundreds digit from 3 to 4.",
"help": "One hundred more means add 1 to the hundreds digit."
}
]
}