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Estimating the Difference
A. Choose the reasonable estimated difference.
1. 651 − 278
200
300
400
2. 999 − 777
200
300
400
3. 4586 − 598
3500
4000
4500
4. 8643 − 4922
3000
4000
500
5. 6342 − 3458
3000
4000
500

B. Estimate the difference. Fill in the blank with the correct answer.
6.
638
−
 529
7.
884
−
 467
8.
614
−
 289
9.
1283
−
 567
10.
2630
−
 187