Monday, 13 October 2014

ARITHMETICS 2


Evaluate  20 + 6 – 5 – 7 – 9 + 10.

Solution

= 20 + 6 – 5 – 7 – 9 + 10

= 20 + 6 + 10 – 5 – 7 – 9

= 20 + 6 + 10 – ( 5 + 7 + 9)

= 36 – 21

= 15

TRY THIS


Evaluate  35 + 6 – 4 – 7 – 11 + 8

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