Mixed rounding to the underlined digit (Large Numbers) - Grade 5 ... - Free Printable

Problem Description:

The task is to round each given number to the accuracy of the underlined digit. This involves identifying the underlined digit and rounding the number based on the rules of rounding.

Rounding Rules:

1. Identify the underlined digit.
2. Look at the digit immediately to the right of the underlined digit.
- If this digit is 5 or greater, round up the underlined digit by 1.
- If this digit is less than 5, keep the underlined digit as it is.
3. Replace all digits to the right of the underlined digit with zeros (if necessary).

Solution:

#### Step-by-Step Solutions:

1. 124,805
- Underlined digit: 2
- Digit to the right: 4
- Since 4 < 5, keep the underlined digit as it is.
- Result: 120,000

2. 8,882,815
- Underlined digit: 8
- Digit to the right: 8
- Since 8 ≥ 5, round up the underlined digit by 1.
- Result: 9,000,000

3. 1,055,883
- Underlined digit: 0
- Digit to the right: 5
- Since 5 = 5, round up the underlined digit by 1.
- Result: 1,000,000

4. 9,759,452
- Underlined digit: 7
- Digit to the right: 5
- Since 5 = 5, round up the underlined digit by 1.
- Result: 10,000,000

5. 9,671,089
- Underlined digit: 6
- Digit to the right: 7
- Since 7 ≥ 5, round up the underlined digit by 1.
- Result: 10,000,000

6. 1,199,318
- Underlined digit: 1
- Digit to the right: 9
- Since 9 ≥ 5, round up the underlined digit by 1.
- Result: 1,000,000

7. 2,365,663
- Underlined digit: 3
- Digit to the right: 6
- Since 6 ≥ 5, round up the underlined digit by 1.
- Result: 2,000,000

8. 7,120,713
- Underlined digit: 1
- Digit to the right: 2
- Since 2 < 5, keep the underlined digit as it is.
- Result: 7,000,000

9. 4,507,627
- Underlined digit: 5
- Digit to the right: 0
- Since 0 < 5, keep the underlined digit as it is.
- Result: 5,000,000

10. 3,699,246
- Underlined digit: 6
- Digit to the right: 9
- Since 9 ≥ 5, round up the underlined digit by 1.
- Result: 4,000,000

11. 6,851,880
- Underlined digit: 8
- Digit to the right: 5
- Since 5 = 5, round up the underlined digit by 1.
- Result: 7,000,000

12. 461,456
- Underlined digit: 6
- Digit to the right: 1
- Since 1 < 5, keep the underlined digit as it is.
- Result: 500,000

13. 5,051,749
- Underlined digit: 0
- Digit to the right: 5
- Since 5 = 5, round up the underlined digit by 1.
- Result: 5,000,000

14. 9,471,850
- Underlined digit: 4
- Digit to the right: 7
- Since 7 ≥ 5, round up the underlined digit by 1.
- Result: 9,000,000

15. 384,167
- Underlined digit: 8
- Digit to the right: 4
- Since 4 < 5, keep the underlined digit as it is.
- Result: 400,000

16. 7,286,557
- Underlined digit: 2
- Digit to the right: 8
- Since 8 ≥ 5, round up the underlined digit by 1.
- Result: 7,000,000

17. 9,641,145
- Underlined digit: 6
- Digit to the right: 4
- Since 4 < 5, keep the underlined digit as it is.
- Result: 10,000,000

18. 8,805,284
- Underlined digit: 8
- Digit to the right: 0
- Since 0 < 5, keep the underlined digit as it is.
- Result: 9,000,000

19. 4,059,299
- Underlined digit: 0
- Digit to the right: 5
- Since 5 = 5, round up the underlined digit by 1.
- Result: 4,000,000

20. 5,679,722
- Underlined digit: 6
- Digit to the right: 7
- Since 7 ≥ 5, round up the underlined digit by 1.
- Result: 6,000,000

Final Answers:

\[
\boxed{
\begin{array}{ll}
1. & 120,000 \\
2. & 9,000,000 \\
3. & 1,000,000 \\
4. & 10,000,000 \\
5. & 10,000,000 \\
6. & 1,000,000 \\
7. & 2,000,000 \\
8. & 7,000,000 \\
9. & 5,000,000 \\
10. & 4,000,000 \\
11. & 7,000,000 \\
12. & 500,000 \\
13. & 5,000,000 \\
14. & 9,000,000 \\
15. & 400,000 \\
16. & 7,000,000 \\
17. & 10,000,000 \\
18. & 9,000,000 \\
19. & 4,000,000 \\
20. & 6,000,000 \\
\end{array}
}
\]