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Practice Test on Estimating Sums and Difference
Math practice test on estimating sums and difference will help the students to learn how to find the approximate or the estimate value of the numbers and their sums and difference.
A. Questions on estimating sums:
1. Estimate each sum to the nearest ten. Also find the actual sum:
(a) 245 + 475
(b) 463 + 272
(c) 5695 + 1163
(d) 256 + 752 + 723
(e) 6314 + 2161 + 5889
(f) 259 + 662 + 823 + 40
2. Estimate each sum to the nearest hundred. Also find the actual sum:
(a) 259 + 445
(b) 394 + 248
(c) 764 + 897
(d) 7348 + 5476
(e) 3108 + 6493
(f) 25426 + 63217
3. Estimate each sum to the nearest thousand. Also find the actual sum:
(a) 9285 + 2938
(b) 8364 + 3987
(c) 3648 + 8497
(d) 36142 + 31233
(e) 8792 + 1733 + 4093
(f ) 8162 + 1113 + 2697
B. Questions on estimating difference:
1. Estimate each difference to the nearest ten. Find the actual difference also:
(a) 63 - 28
(b) 92 - 35
(c) 846 - 129
(d) 914 - 226
(e) 738 - 598
(f) 746 - 367
2. Estimate each difference to the nearest hundred. Find the actual difference also:
(a) 840 - 382
(b) 624 - 251
(c) 512 - 324
(d) 521 - 255
(e) 9785 - 6264
(f) 86503 - 64315
3. Estimate each difference to the nearest thousand. Find the actual difference also:
(a) 3149 - 2027
(b) 6824 - 4372
(c) 9218 - 7539
(d) 36248 - 11759
(e) 89432 - 17215
(f) 8247 - 4562
Answers for practice test on estimating sums and difference will help the students to check the exact answers of the above questions.
Answers:
A. 1. (a) 720; 730
(b) 735; 730
(c) 6858; 6860
(d) 1731; 1730
(e) 14364; 14360
(f) 1784; 1780
2. (a) 704; 700
(b) 642; 600
(c) 1661; 1700
(d) 12824; 12900
(e) 9601; 9600
(f) 88643; 88600
3. (a) 12223; 12000
(b) 12351; 12000
(c) 12145; 12000
(d) 67375; 67000
(e) 14518; 15000
(f) 11972; 12000
B. 1. (a) 30; 35
(b) 50; 57
(c) 720; 717
(d) 700; 688
(e) 100; 140
(f) 400; 379
2. (a) 400; 458
(b) 300; 373
(c) 200; 188
(d) 200; 266
(e) 3500; 3521
(f) 22200; 22188
3. (a) 1000; 1122
(b) 3000; 2452
(c) 1000; 1679
(d) 24000; 24489
(e) 72000; 72227
(f) 3000; 3685
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