Place value/Rounding: Problem Solving

1. The Pine Hurst music store has 125,039 country music CDs and twice as many rock CDs. The store also has 124,751 RB CDs. Rounded to the nearest ten thousand, about how many CDs does the store have altogether? 2. Logan and Mason are playing a video game. The number of points that Logan has is greater than 300,000 but less than 400,000. There is an 8 in the ten thousands and the hundreds place. The digit in the thousands place is half the digit in the ones place. The digit in the tens place is 4 more than the hundred thousands place. The sum of all the digits is 32. How many points does Logan have? 3. Last year, the Colonial School District booster club made $45,670 for sporting events. This year, the booster club made $46,410. Rounded to the nearest thousand, which year did the booster club make more money? Last year this year they're equal 4. The third, fourth and fifth graders of the Miller Elementary Schoolare collecting cans for recycling. Which grade collected the greatest amount of cans? third fourth fifth 5. Rounded to the nearest thousand, about how many cans did thestudents collect altogether in Exercise 4? 6. Challenge: I am a six-digit number between 600,000 and 700,000. The digit in the ten thousands place is 1 more than the digits in the thousands and hundreds place. The digit in the hundreds place is 3. The sum of the digits in the ones and tens place equals the digit in the hundred thousands place.Peyton says the number is 643,351. Is she correct? Are there any other numbers that would answer the riddle? Explain.