1) Estimate the difference of 12345 and 54321 to nearest 1000 a) 65000 b) 43000 c) 41000 d) 42000 2) 42518-1 a) 42417 b) 42416 c) 42418 d) 42419 3) Adding 1 to a number will give a) successor of the number b) 0 c) predecssor of the number d) same number 4) 12345-12345+12345 a) 0 b) 12345 c) 37035

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