1. Estimate chof the following using general rule: (230-0 (1) 796-314 ( 12.904 +2.888 (d) 28.292 - 21.496 Make sen more such examples of addition, subtraction and estimation of their outcome.
2. Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens): a) 439 + 334 +4.317 b) 1.08.734-47.599 (c) 8325-491 (d) 4.893-18-48.305 Make four more such examples
3. Estimate the following products using general rule: (a) 578 * 161 (b) 5281 x 3491 (c) 1291 x 392 (d) 9250 x 29 Make four more such examples
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