Friday, 7 February 2014

ARITHMETICS A4

Evaluate  50 + 20 – 8 – 13 – 9 + 10

Solution

= 50 + 20 – 8 – 13 – 9 + 10

= 50 + 20 + 10 – 8 – 13 – 9

= 50 + 20 + 10 – (8 + 13 + 9)

= 80 – 30

= 50

TRY THIS........


Evaluate  60 + 20 – 17 – 8 – 5 + 10

No comments:

Post a Comment