A. Round off to the nearest hundred: 1. 2246 = 2300 2. 5134 = 5100 3. 3321 = 2300 4. 5461 = 5500 5. 7458 = 7500 6. 8492 = 8500 B. Round off to the nearest thousand: 1. 20890 = 2. 14201 = 3. 9050 = 4. 85419 = 5. 75923 = 6. 92504 = C. Round off to the nearest ten-thousand: 1. 245667 = 2. 379420 =

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EmmaGraceJohnson · Answer

To solve the student's rounding questions, we need to understand the concept of rounding numbers to specified place values. Rounding numbers is a way of simplifying them by decreasing the number of significant digits, based on certain rules. 
 Part A: Round off to the nearest hundred 
 
 2246 : To round 2246 to the nearest hundred, observe the tens digit. If it is 5 or more, round up; otherwise, round down. Here, the tens digit is 4, so we round down to 2200. 
 Correct answer: 2200 
 
 5134 : The tens digit is 3, which is less than 5. Therefore, we round down to 5100. 
 Correct answer: 5100 
 
 3321 : The tens digit is 2, which is less than 5. Therefore, we round down to 3300. 
 Correct answer: 3300 
 
 5461 : The tens digit is 6, which is 5 or more. Thus, we round up to 5500. 
 Correct answer: 5500 
 
 7458 : The tens digit is 5, so we round up to 7500. 
 Correct answer: 7500 
 
 8492 : The tens digit is 9, so we round up to 8500. 
 Correct answer: 8500

Part B: Round off to the nearest thousand 
 
 20890 : The hundreds digit is 8, which is 5 or more. So, we round up to 21000. 
 Correct answer: 21000 
 
 14201 : The hundreds digit is 2, which is less than 5. Therefore, we round down to 14000. 
 Correct answer: 14000 
 
 9050 : The hundreds digit is 0, which is less than 5. Therefore, we round down to 9000. 
 Correct answer: 9000 
 
 85419 : The hundreds digit is 4, which is less than 5. Therefore, we round down to 85000. 
 Correct answer: 85000 
 
 75923 : The hundreds digit is 9, so we round up to 76000. 
 Correct answer: 76000 
 
 92504 : The hundreds digit is 5, so we round up to 93000. 
 Correct answer: 93000

Part C: Round off to the nearest ten-thousand 
 
 245667 : The digit in the thousand's place is 4, which is less than 5. Thus, we round down to 240000. 
 Correct answer: 240000 
 
 379420 : The digit in the thousand's place is 9, so we round up to 380000. 
 Correct answer: 380000

Understanding these basic rules of rounding helps in estimating and simplifying numbers within math problems.

A. Round off to the nearest hundred: 1. 2246 = 2300 2. 5134 = 5100 3. 3321 = 2300 4. 5461 = 5500 5. 7458 = 7500 6. 8492 = 8500 B. Round off to the nearest thousand: 1. 20890 = 2. 14201 = 3. 9050 = 4. 85419 = 5. 75923 = 6. 92504 = C. Round off to the nearest ten-thousand: 1. 245667 = 2. 379420 =

Answer (1)

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