InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Round off each of the following to the nearest tens, hundreds and thousands.(i) 864(ii) 1249(iii) 54, 547(iv) 68, 076(v) 56, 293(vi) 7, 293(vii) 89, 24, 379 |
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Answer» (i) 864 – 860 864 – 900 864 – 1000 (ii) 1249 – 1250 1249 – 1200 1249 – 1000 (iii) 54, 547 – 54550 54, 547 – 54500 54, 547 – 55000 (iv) 68, 076 – 68, 080 68, 076 – 68, 100 68, 076 – 68, 000 (v) 56, 293 – 56, 290 56, 293 – 56, 300 56, 293 – 56, 000 (vi) 7, 293 – 7290 7, 293 – 7, 300 7, 293 – 7000 (vii) 89, 24, 379 – 89, 24, 380 89, 24, 379 – 89, 24, 400 89, 24, 379 – 89, 24, 000 |
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| 2. |
Estimate each difference to the nearest thousand:(i) 45974 – 38766(ii) 76003 – 48399 |
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Answer» (i) 45974 – 38766 45974 to the nearest thousand = 46000 and, 38760 to the nearest thousand = 39000 ∴ Required difference = (46000 – 39000) = 7000 (ii) 76003 – 48399 76003 to the nearest thousand = 76000 and, 48399 to the nearest thousand = 48000 ∴ Required difference = (76000 – 48000) = 28000 |
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| 3. |
Estimate the following differences correct to nearest ten :(i) 82 – 27(ii) 96 – 36(iii) 508 – 248 |
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Answer» (i) 82 – 27 82 to the nearest ten = 80 and, 27 to the nearest ten = 30 ∴ Required difference = (80 – 30) = 50 (ii) 96 – 36 96 to the nearest ten = 100 and, 36 to the nearest ten = 40 ∴ Required difference = (100 – 40) = 60 (iii) 508 – 248 508 to the nearest ten = 510 and, 248 to the nearest ten = 250 ∴ Required difference = (510 – 250) = 260 |
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| 4. |
Write the smallest and the largest numbers which are rounded off to 130. |
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Answer» The smallest number which is rounded off to 130 is 125 and The largest number which is rounded off to 130 is 134. |
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| 5. |
Write the smallest and the largest numbers which are rounded off to 80. |
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Answer» The smallest number which is rounded off to 80 is 75 and the largest number which is rounded off to 80 is 84. |
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| 6. |
Estimate the sum of each pair of numbers to the nearest ten :(i) 67 and 44(ii) 34 and 87(iii) 23 and 66(iv) 78 and 18(v) 96 and 55(vi) 76 and 62(vii) 457 and 175(viii) 474 and 173(ix) 527 and 267 |
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Answer» (i) 67 and 44 67 to the nearest ten 70 and, 44 to the nearest ten = 40 ∴ Required sum (70 + 40) = 110 (ii) 34 and 87 34 to the nearest ten = 30 and, 87 to the nearest ten = 90 ∴ Required sum = (30 + 90) = 120 (iii) 23 and 66 23 to the nearest ten = 20 and, 66 to the nearest ten = 70 ∴ Required sum = (20 + 70) = 90 (iv) 78 and 18 78 to the nearest ten = 80 and, 18 to the nearest ten = 20 ∴ Required sum = (80 + 20) = 100 (v) 96 and 55 96 to the nearest ten = 100 and, 55 to the nearest ten = 60 ∴ Required sum = (100 + 60) = 160 (vi) 76 and 62 76 to the nearest ten = 80 and, 62 to the nearest ten = 60 ∴ Required sum = (80 + 60) = 140 (vii) 457 and 175 457 to the nearest ten = 460 and, 175 to the nearest ten = 180 ∴ Required sum = (460 + 180) = 640 (viii) 474 and 173 474 to the nearest ten = 470 and, 173 to the nearest ten = 170 ∴ Required sum = (470 + 170) = 640 (ix) 527 and 267 527 to the nearest ten = 530 and, 267 to the nearest ten = 270 ∴ Required sum = (530 + 270) = 800 |
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| 7. |
Estimate the sum of each pair of numbers to the nearest hundred :(i) 336 and 782(ii) 546 and 342(iii) 270 and 495(iv) 4280 and 5295(v) 4230 and 2410(vi) 30047 and 39287 |
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Answer» (i) 336 and 782 336 to the nearest hundred = 300 and, 782 to the nearest hundred = 800 ∴ Required sum = (300 + 800) = 1100 (ii) 546 and 342 546 to the nearest hundred = 500 and 342 to the nearest hundred = 300 ∴ Required sum = (500 + 300) = 800 (iii) 270 and 495 270 to the nearest hundred = 300 and, 495 to the nearest hundred = 500 ∴ Required sum = (300 + 500) = 800 (iv) 4280 and 5295 4280 to the nearest hundred = 4300 and, 5295 to the nearest hundred = 5300 ∴ Required sum = (4300 + 5300) = 9600 (v) 4230 and 2410 4230 to the nearest hundred = 4200 and, 2410 to the nearest hundred = 2400 ∴ Required number = (4200 + 2400) = 6600 (vi) 30047 and 39287 30047 to the nearest hundred = 30000 and, 39287 to the nearest hundred = 39300 ∴ Required sum = (30000 + 39300) = 69, 300 |
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| 8. |
List all the numbers which can be rounded off to 50. |
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Answer» The numbers that can be rounded off to 50 are: 46, 47, 48, 49, 51, 52, 53, 54 |
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| 9. |
List all the numbers which can be round off to 30. |
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Answer» The numbers that can be rounded off to 30 are: 26, 27, 28, 29, 31, 32, 33, 34 |
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