Estimate each of the following using general rule:(a) 730 + 998 (b) 796 – 314 (c) 12,904 +2,888 (d) 28,292 – 21,496Make ten more such examples of addition, subtraction and estimation of their outcome.

Estimate each of the following using general rule:(a) 730 + 998 �

1.	Estimate each of the following using general rule:(a) 730 + 998 (b) 796 – 314 (c) 12,904 +2,888 (d) 28,292 – 21,496Make ten more such examples of addition, subtraction and estimation of their outcome.
Answer» (a) 730+998`` `730->700` `998-> 1000` `700+1000 = 1700` (b) `796-314` `796-> 800` `314-> 300` `800-300= 500` (c) `12904 + 2888` `12904-> 13000` `2888 -> 3000` `13000+3000 = 16000` (d) `28292-21496` `28292->28000` `21496-> 21000` `28000-21000= 7000` examples are : 1) `12-6` `12-> 10, 6->6` `10-6=4` 2) `56-31` `56-> 100, 31->30` `100-30=70` 3)`78+42` `78-> 100 , 42->40` `100+40=140` 4) `740+878` `740-> 700, 878-> 900` `700+900= 1600` 5) `370+288` `370-> 400, 288->300` `400+300= 700` 6) `572- 223` `572->600` `223 - > 200` `600-200= 400` 7) `411-191` `411-> 400 , 191-> 200` `400-200= 200` 8) `1904+ 2718` `1904-> 2000, 2718-> 3000` `2000+3000 = 5000` 9) `3708- 2242` `3708-> 4000` `2242-> 2000` `4000-2000= 2000` 10) `19 -1` `19-> 20 , 1->0` `20-0= 20` answer