Question

remember that rounding a number means replacing it with a number that tells about how many or how much. round each number to the place of the underlined digit. 1. 10.245 2. 73.4 3. 0.145 4. 3.999 5. 13.023 6. 45.398

Explanation:

Step1: Recall rounding - off rules

If the digit to the right of the under - lined digit is 5 or greater, we increase the under - lined digit by 1. If it is less than 5, the under - lined digit remains the same and all digits to the right are dropped.

Step2: Round 10.245

The under - lined digit is 2. The digit to the right is 4 which is less than 5. So, 10.245 rounds to 10.2.

Step3: Round 73.4

The under - lined digit is 3. There is no digit to the right in terms of the next place value for this rounding. So, 73.4 remains 73.4.

Step4: Round 0.145

The under - lined digit is 4. The digit to the right is 5. So, we increase 4 by 1. 0.145 rounds to 0.15.

Step5: Round 3.999

The under - lined digit is 9. The digit to the right is 9 which is greater than 5. So, we increase 9 by 1. Since 9 + 1=10, we carry the 1 over to the next place value. 3.999 rounds to 4.0.

Step6: Round 13.023

The under - lined digit is 0. The digit to the right is 2 which is less than 5. So, 13.023 rounds to 13.0.

Step7: Round 45.398

The under - lined digit is 3. The digit to the right is 9 which is greater than 5. So, we increase 3 by 1. 45.398 rounds to 45.4.

Answer:

1. 10.2
2. 73.4
3. 0.15
4. 4.0
5. 13.0
6. 45.4