New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 5 Rounding Off Numbers Self Practice 3A Solution
Self practice set 3A
1)
a) Nearest ten of 68 is – 70
Because 68 + 2 = 70 (it is farthest)
and 68 – 8 = 60 (it is nearest)
So the nearest ten will be 70
b) Nearest ten of 45 is – 50
Because 45 + 5 = 50
So the nearest ten will be 50
c) Nearest ten of 31 is – 30
Because 31 + 9 = 40 (it is farthest)
and 31-1 = 30 (it is nearest)
So the nearest ten will be 30
d) Nearest ten of 542 is – 540
Because 542 + 8 = 540 (it is farthest)
and 542 – 2 = 540 (it is nearest)
So the nearest ten will be 540
e) Nearest ten of 783 is – 780
Because 783 + 7 = 790 (it is farthest)
and 783 – 3 = 780 (it is nearest)
So the nearest ten will be 780
f) Nearest ten of 428 is – 430
Because 428 – 8 = 420 (it is farthest)
and 428 + 2 (it is nearest)
So the nearest ten will be 430
g) Nearest ten of 989 is – 990
Because 989 + 1 = 990 (it is farthest)
and 989 – 9 = 980 (it is nearest)
So the nearest ten will be 990
h) Nearest ten of 273 is – 270
Because 273 + 7 = 280 (it is farthest)
and 273 – 3 = 270 (it is nearest)
So the nearest ten will be 270
i) Nearest ten of 5655 is – 5660
Because 5655 + 5 = 5660
So the nearest ten will be 5660
j) Nearest ten of 9827 is – 9830
2)
a) Nearest hundred of 675 is – 700
Because 675-75= 600 (it is farthest)
and 675 + 25 = 700 (it is nearest)
So the nearest hundred will be 700
b) Nearest hundred of 582 is – 600
Because 582 – 82 = 500 (it is farthest)
and 582 + 18 = 600 (it is nearest)
So the nearest hundred will be 600
c) Nearest hundred of 3219 is – 3200
Because 675-75 = 600 (it is farthest)
and 675 + 25 = 700 (it is nearest)
So the nearest hundred will be 700
d) Nearest hundred of 6240 is – 6200
Because 6240 – 140 = 6100 (it is farthest)
and 6240 – 400 = 6200 (it is nearest)
So the nearest hundred will be 6200
e) Nearest hundred of 8833 is – 8800
Because 8833 +67 = 8900 (it is farthest)
and 8833 – 33 = 8800 (it is nearest)
So the nearest hundred will be 8800
f) Nearest hundred of 52697 is – 52700
Because 52697 – 97 = 52600 (it is farthest)
and 52697 + 3 = 52700 (it is nearest)
So the nearest hundred will be 52700
g) Nearest hundred of 5088 is – 5100
Because 5088 – 88 = 5000 (it is farthest)
and 5088 + 12 = 5100 (it is nearest)
So the nearest hundred will be 5100
h) Nearest hundred of 3298 is – 3300
Because 3298 – 98 = 3200 (it is farthest)
and 3928 + 2 = 3300 (it is nearest)
So the nearest hundred will be 3300
i) Nearest hundred of 807 is – 800
Because 807 + 93 = 900 (it is farthest)
and 807 – 7 = 800 (it is nearest)
So the nearest hundred will be 800
j) Nearest hundred of 5928 is – 5900
Because 5928 + 72 = 6000(it is farthest)
and 5928 – 28 = 5900 (it is nearest)
So the nearest hundred wi2ll be 5900
3)
a) Nearest thousand of 2992 is – 3000
Because 2992 – 992 = 2000 (it is farthest)
and 2992 + 8 = 3000 (it is nearest)
So the nearest hundred will be 3000
b) Nearest thousand of 5644 is – 6000
Because 5644 – 644 = 5000 (it is farthest)
and 5644 +356 = 6000 (it is nearest)
So the nearest hundred will be 6000
c) Nearest thousand of 4367 is – 4000
Because 4367 + 633 = 5000 (it is farthest)
and 4367 – 367 = 4000 (it is nearest)
So the nearest hundred will be 4000
d) Nearest thousand of 7881 is – 8000
Because 7881 – 881 = 7000 (it is farthest)
and 7881 + 119 = 8000 (it is nearest)
So the nearest hundred will be = 8000
e) Nearest thousand of 7337 is – 7000
Because 7337 + 663 = 7000 (it is farthest)
and 7337 – 337 = 7000 (it is nearest)
So the nearest hundred will be 7000
f) Nearest thousand of 6634 is – 7000
Because 6634 – 634 = 6000 (it is farthest)
and 6634 + 366 = 7000 (it is nearest)
So the nearest hundred will be 7000
g) Nearest thousand of 71568 is – 72000
Because 6634 – 634 = 6000 (it is farthest)
and 6634 + 366 = 7000 (it is nearest)
So the nearest hundred will be
h) Nearest thousand of 15496 is – 15000
Because 15496 + 504 = 16000 (it is farthest)
and 15496 – 496 = 15000 (it is nearest)
So the nearest hundred will be 15000
i) Nearest thousand of 80005 is – 80000
Because 80005 +9995 = 90000 (it is farthest)
and 80005 – 5 = 80000 (it is nearest)
So the nearest hundred will be 80000
j) Nearest thousand of 40678 is – 41000
Because 40678 – 678 = 40000 (it is farthest)
and 40678 + 322 = 41000 (it is nearest)
So the nearest hundred will be 41000
4)
a) Nearest ten, hundred & thousand of 832 is 830, 800, 1000
b) Nearest ten, hundred & thousand of 783 is 780,800,1000
c) Nearest ten, hundred & thousand of 579 is 580,600,1000
d) Nearest ten, hundred & thousand of 9483 is 9480,9500,9000
e) Nearest ten, hundred & thousand of 9992 is 9990,10000,10000
f) Nearest ten, hundred & thousand of 2831 is 2830,2800,3000
g) Nearest ten, hundred & thousand of 5887 is 5890,5900,6000
h) Nearest ten, hundred & thousand of 9838 is 9840,9800,10000
i) Nearest ten, hundred & thousand of 7556 is 7560,7600,8000
j) Nearest ten, hundred & thousand of 24382 is 24380,24422,24000