Estimate each of the following using general rules:
(a) 730 + 998 (b) 796 - 314 (c) 12904 + 2888 (d) 28292 - 21496
Make ten more such examples of addition, subtraction, and estimation of their outcome.
(a) 730 + 998 (b) 796 - 314 (c) 12904 + 2888 (d) 28292 - 21496
Make ten more such examples of addition, subtraction, and estimation of their outcome.
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Answer:
(a) 730----700
998----1000
= 700+1000=1700
(b) 796----800
314----300
= 800-300=500
(c) 12904----13000
2888----3000
= 13000+3000=16000
(d) 28929----29000
21496----21000
= 29000-21000=8000
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