Question

1. Round off each of the following numbers to the nearest tens:
(ii) 884
(iii) 997
(v) 26925
(vi) 15802
2. Round off each of the following numbers to the nearest hundreds :
(ü) 948
(iii) 4783
(v) 27726
(vi) 3124
(1) 630
(iv) 5249​

Answer 1

Answer:

(i) 28\times28728×287

28 to the nearest ten = 30 and,

287 to the nearest hundred = 300

∴ Required product = 30\times300=900030×300=9000

(ii) 432\times128432×128

432 to the nearest ten = 430 and,

128 to the nearest hundred = 100

∴ Required product = 430\times100=43000430×100=43000

(iii) 48\times16548×165

48 to the nearest ten = 50 and,

165 to the nearest hundred = 200

∴ Required product = 50\times200=1000050×200=10000

(iv) 72\times25872×258

72 to the nearest ten = 70 and,

258 to the nearest hundred = 300

∴ Required product = 70\times300=2100070×300=21000

(v) 83\times66483×664

83 to the nearest ten = 80 and,

664 to the nearest hundred = 700

∴ Required product = 80\times700=5600080×700=56000