Evaluate 39942 –
39842
Solution
39942 –
39842 = (3994 + 3984)( 3994 – 3984)
= (7978)( 10) [or 7978 x 10]
= 79780
Hence 39942 –
39842 = 79780
TRY THIS…………….
Evaluate 6312 –
5312
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