Estimate each of the following using general rule:
(b) 796 – 314 (c) 12,904 +2,888
(a) 730 +998
d) 28,292 - 21,496
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Step-by-step explanation:
A. 730+998
estimate of 100
=> 730------ 700
998------1000
=> 700+1000=1700ans
B. 796-314
estimate of 100
796--------800
314---------300
=> 800-300= 500ans
C. 12904+2888
estimate of 1000
12904----------13000
2888-----------3000
=>13000+3000=16,000ans
D. 28292-21496
estimate of 1000
28292---------28000
21496----------210000
=>28000-21000=7000ans
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