Estimate by rounding to the nearest ten

1. 1.
   Estimate 64 + 854 by rounding each number to the nearest ten.
2. 2.
   Estimate 313 − 184 by rounding each number to the nearest ten.
3. 3.
   Estimate 688 + 578 by rounding each number to the nearest ten.
4. 4.
   Estimate 125 + 353 by rounding each number to the nearest ten.
5. 5.
   Estimate 165 + 246 by rounding each number to the nearest ten.
6. 6.
   Estimate 611 + 704 by rounding each number to the nearest ten.
7. 7.
   Estimate 217 + 96 by rounding each number to the nearest ten.
8. 8.
   Estimate 101 + 800 by rounding each number to the nearest ten.
9. 9.
   Estimate 609 − 139 by rounding each number to the nearest ten.
10. 10.
    Estimate 325 + 195 by rounding each number to the nearest ten.
11. 11.
    Estimate 807 + 922 by rounding each number to the nearest ten.
12. 12.
    Estimate 773 − 761 by rounding each number to the nearest ten.
13. 13.
    Estimate 635 + 645 by rounding each number to the nearest ten.
14. 14.
    Estimate 909 + 73 by rounding each number to the nearest ten.
15. 15.
    Estimate 686 + 327 by rounding each number to the nearest ten.
16. 16.
    Estimate 391 + 448 by rounding each number to the nearest ten.
17. 17.
    Estimate 103 + 335 by rounding each number to the nearest ten.
18. 18.
    Estimate 457 + 841 by rounding each number to the nearest ten.
19. 19.
    Estimate 685 − 228 by rounding each number to the nearest ten.
20. 20.
    Estimate 212 + 103 by rounding each number to the nearest ten.

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