Question

Estimate each of the following using general rule:
(a) 730 +998 (b) 796 - 314
(b) 796 - 314 (c) 12,904 +2,888
(c) 12,904 +2,888 (d) 28,292 -21,496
lote​

Answer 1

$a] 730 +998 = estimated -answer-is-=700+1000= 1700\\(b) 796-314 -estimated -answer=800-300=500\\(c) 12,904 +2,888 -estimated-answer=13,000+3,000= 16,000\\(d) 28,292-21,496​ - estimated-answer=28,000-21,000=7,000$