8. Compare the following numbers:
(a) 1.8 x 1015: 1.5 X 1020
(b) 2.7 x 1011: 3.0 X 1015
(C) 2.8 X 1020: 3.5 % 1018
(d) 1.008 X 1015: 2.009 X 1020
Answers
Answer:
(a) 1.8×1015:1.5×1020
1827 :1530
203:170
(b) 2.7×1011:3.0×1015
2729.7 : 3045
909.9 : 1015
Answer:
(a) 1.8 x 1015 : 1.5 x 1020
= 1.8 x 10 power 15 = 18/10 x 1015 = 1.8 x 1014
= 1.5 x 10 power 20 = 15/10 x 1020 = 1.5 x 1019
second one is greater because its power is bigger than first one
(b)2.7 x 1011 : 3.0 x 1015
= 2.7 x 10 power 11 = 27/10 x 1011 = 2.7 x 1010
= 3.0 x 10 power 15 = 30/10 x 1015 = 3.0 x 1014
second one is greater because its power is bigger than first one
(c)2.8 x 1020 : 3.5 x 1018
= 2.8 x 10 power 20 = 28/10 x 1020 = 2.8 x 1019
= 3.5 x 10 power 18 = 35/10 x 1018 = 3.5 x 1017
first one is greater because its power is bigger than second one
(d) 1.008 x 1015 : 2.009 x 1020
= 1.008 x 10 power 15 = 1008/1000 x 1015
= 1.008 x 1012
= 2.009 x 10 power 20 = 2009/1000 x 1020
= 2.009 x 1017
second one is greater because its power is bigger than first one
Step-by-step explanation:
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