RS Aggarwal Class 6 Chapter 1 Number System, Exercise 1D Solution . Solution of all questions is given in detail. All solutions are provided in detail so every student can understand it easily.
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Question 1:
Round each of the following numbers to the nearest ten:
(a) 36
(b) 173
(c) 3869
(d) 16378
Answer 1:
(a) 40 (Nearest ten)
(b) 170 (Nearest ten)
(c) 3870 (Nearest ten)
(d)16380 (Nearest ten)
Question 2:
Round each of the following numbers to the nearest hundred:
(a) 814
(b) 1254
(c) 43126
(d) 98165
Answer 2:
(a) 800 (Nearest hundred)
(b) 1300 (Nearest hundred)
(c) 43100 (Nearest hundred)
(d) 98200 (Nearest hundred)
Question 3:
Round each of the following numbers to the nearest thousand:
(a) 793
(b) 4826
(c) 16719
(d) 28394
Answer 3:
(a) 1000 (Nearest thousand)
(b) 5000 (Nearest thousand)
(c) 17000 (Nearest thousand)
(d) 28000 (Nearest thousand)
Question 4:
Round each of the following numbers to the nearest ten thousand:
(a) 17514
(b) 26340
(c) 34890
(d) 272680
Answer 4:
(a) 20000 (Nearest ten thousand)
(b) 30000 (Nearest ten thousand)
(c) 30000 (Nearest ten thousand)
(d) 270000 (Nearest ten thousand)
Estimate each sum to the nearest ten:
Question 5:
(57 + 34)
Answer 5:
(57 + 34) = 91 = 90 (Nearest ten)
Question 6:
(43 + 78)
Answer 6:
(43 + 78) = 121 = 120 (Nearest ten)
Question 7:
(14 + 69)
Answer 7:
(14 + 69) = 83 = 80 (Nearest ten)
Question 8:
(86 + 19 )
Answer 8:
(86 + 19) = 105 = 110 (Nearest ten)
Question 9:
(95 + 58)
Answer 9:
(95 + 58) = 153 = 150 (Nearest ten)
Question 10:
(77 + 63)
Answer 10:
(77 + 63) = 140 = 140 (Nearest ten)
Question 11:
(356 + 275)
Answer 11:
(356 + 275) = 631 = 630 (Nearest ten)
Question 12:
(463 + 182)
Answer 12:
(463 + 182) = 645 = 640 (Nearest ten)
Question 13:
(538 + 276)
Answer 13:
(538 + 276) = 814 = 810 (Nearest ten)
Estimate each sum to the nearest hundred:
Question 14:
(236 + 689)
Answer 14:
(236 + 689) = 925 = 900 (Nearest hundred)
Question 15:
(458 + 324)
Answer 15:
(458 + 324) = 782 = 800 (Nearest hundred)
Question 16:
(170 + 395)
Answer 16:
(170 + 395) = 565 = 600 (Nearest hundred)
Question 17:
(3280 + 4395)
Answer 17:
(3280 + 4395) = 7675 = 7700 (Nearest hundred)
Question 18:
(5130 + 1410)
Answer 18:
(5130 + 1410) = 6540 = 6500 (Nearest hundred)
Question 19 :
(10083 + 29380)
Answer 19:
(10083 + 29380) = 39463 = 39500 (Nearest hundred)
Estimate each sum to the nearest thousand:
Question 20 :
(32836 + 16466)
Answer 20:
(32836 + 16466) = 49302 = 49000 (Nearest thousand)
Question 21:
(46703 + 11375)
Answer 21:
(46703 + 11375) = 58078 = 58000 (Nearest thousand)
Question 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 togrther.
Answer 22:
Balls in box A = 54
Balls in box B = 79
Total balls = 133 =130 (Nearest ten)
Estimate each difference to the nearest ten:
Question 23:
(53 – 18)
Answer 23:
(53 – 18) = 35 =30 (Nearest ten)
Question 24:
(97-38)
Answer 24:
(97-38) = 59 = 60 (Nearest ten)
Question 25:
(409 – 148)
Answer 25:
(409 – 148) = 261 = 260 (Nearest ten)
Estimate each difference the nearest hundred:
Question 26:
(678 – 215)
Answer 26:
(678 – 215) = 463 = 500 (Nearest hundred)
Question 27:
(957 – 578)
Answer 27:
(957 – 578) = 379 = 400 (Nearest hundred)
Question 28 :
(7258 – 2429)
Answer 28:
(7258 – 2429) = 4829 = 4800 (Nearest hundred)
Question 29:
(5612 – 3095)
Answer 29:
(5612 – 3095) = 2517 = 2500 (Nearest hundred)
Estimate each difference to the nearest thousand:
Question 30:
(35863 – 27677)
Answer 30:
(35863 – 27677) = 8186 = 8000 (Nearest thousand)
Question 31:
(47005 – 39488)
Answer 31:
(47005 – 39488) = 7517 = 8000 (Nearest thousand)
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