Number System
15
17. (3280 + 4395)
18. (5130 +1410)
Estimate each sum to the nearest thousand:
19. (10083 +29380)
20. (32836 +16466)
21. (46703 +11375)
22. There are 54 balls in box A and 79 balls in box B. Estimate the total number of balls in both
the boxes taken together.
Estimate each difference to the nearest ten:
23. (53 - 18)
24. (97 - 38)
25. (409-148)
Estimate each difference to the nearest hundred:
26. (
678 - 215) 27. (957 - 578) 28. (7258 - 2429) 29. (5612 - 3095)
Estimate each difference to the nearest thousand:
30. (35863 - 27677)
31. (47005 - 39488)
Answers
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Answer:
17. 7675
18. 6650
19. 39000
20 49000
21 58000
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