If a = 2.8x10^5 and b=1.6 x 10^6, give the values of i) a +b and ii) a x b
Find from student what the first step is (get a or b in terms of the other).
a = 2.8 x10^5 = 0.28x10^6
a + b = (0.28 + 1.6) x 10^6
= 1.88 x10^6
ii)
Know that a^x x b^y = ab^x+y
.: 2.8 x 1.6 = 4.48
10^5 x 10^6 = 10^11
a x b = 4.48x10^11
JA
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