1) Estimate 2598 to the nearest 100 a) 2600 b) 2500 c) 2590 2) Round off 455 to the nearest 10 a) 450 b) 460 c) 440 3) Estimate the sum of 32 and 45  a) 70 b) 77 c) 80 4) Estimate:673 - 322 a) 500 b) 400 c) 300 5) Estimate the product of 22 and 47 a) 800 b) 900 c) 1000

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