There is an error in the calculation of the powers of 10. When multiplying numbers in scientific notation, you add the exponents of the powers of 10, not the actual numbers themselves.
The correct calculation should be:
(7.1 x 10^5) x (2 x 10^1)
= 7.1 x 2 x 10^5 x 10^1
= 14.2 x 10^6
Therefore, the correct total weight for the 20 whales is 14.2 x 10^6.
5. (7.1 x 10^5) x (2 x 10^1)
7.1 x 2=14.2
10^5 + 10^1 = 10^6
The total weight for the 20 whales is 14.2 x 10^6
identify and explain the error.
1 answer