Let’s go through each problem one by one. We’re rounding the
underlined digit to the nearest place value it represents.
Remember:
- Look at the digit
to the right of the underlined digit.
- If that digit is
5 or more, round
up.
- If it’s
less than 5, keep the underlined digit the same and change all digits to the right to zero.
---
1.
9,059 → underline is on
0 (hundreds place)
Next digit is
5 → round up → 0 becomes 1 →
9,100
2.
2,198 → underline is on
9 (tens place)
Next digit is
8 → round up → 9 becomes 10 → carry over →
2,200
3.
1,407 → underline is on
1 (thousands place)
Next digit is
4 → less than 5 → keep 1 →
1,000
4.
9,020 → underline is on
0 (hundreds place)
Next digit is
2 → less than 5 → keep 0 →
9,000
5.
93,040 → underline is on
9 (ten thousands place)
Next digit is
3 → less than 5 → keep 9 →
90,000
6.
85,512 → underline is on
5 (thousands place)
Next digit is
5 → round up → 5 becomes 6 →
86,000
7.
9,103 → underline is on
9 (thousands place)
Next digit is
1 → less than 5 → keep 9 →
9,000
8.
143,017 → underline is on
1 (hundred thousands place)
Next digit is
4 → less than 5 → keep 1 →
100,000
9.
21,572 → underline is on
1 (thousands place)
Next digit is
5 → round up → 1 becomes 2 →
22,000
10.
4,095 → underline is on
9 (tens place)
Next digit is
5 → round up → 9 becomes 10 → carry over →
4,100
11.
77,093 → underline is on
0 (hundreds place)
Next digit is
9 → round up → 0 becomes 1 →
77,100
12.
390,896 → underline is on
0 (thousands place)
Next digit is
8 → round up → 0 becomes 1 →
391,000
13.
459,546 → underline is on
4 (hundred thousands place)
Next digit is
5 → round up → 4 becomes 5 →
500,000
14.
5,440 → underline is on
4 (hundreds place)
Next digit is
4 → less than 5 → keep 4 →
5,400
15.
17,741 → underline is on
7 (hundreds place)
Next digit is
4 → less than 5 → keep 7 →
17,700
16.
185,944 → underline is on
9 (hundreds place)
Next digit is
4 → less than 5 → keep 9 →
185,900
17.
214,021 → underline is on
0 (hundreds place)
Next digit is
2 → less than 5 → keep 0 →
214,000
18.
7,929 → underline is on
9 (hundreds place)
Next digit is
2 → less than 5 → keep 9 →
7,900
19.
43,492 → underline is on
3 (thousands place)
Next digit is
4 → less than 5 → keep 3 →
43,000
20.
5,417 → underline is on
4 (hundreds place)
Next digit is
1 → less than 5 → keep 4 →
5,400
---
Final Answer:
1. 9,100
2. 2,200
3. 1,000
4. 9,000
5. 90,000
6. 86,000
7. 9,000
8. 100,000
9. 22,000
10. 4,100
11. 77,100
12. 391,000
13. 500,000
14. 5,400
15. 17,700
16. 185,900
17. 214,000
18. 7,900
19. 43,000
20. 5,400
Parent Tip: Review the logic above to help your child master the concept of rounding off numbers worksheet.
