Question

a) Check all the following numbers that are properly expressed in scientific notation. o -1.23 x 10⁶ o -29 x 10⁻³ o -1 x 10⁴ o 4 x 10⁻¹ o 0.44 x 10¹⁴ o 3.141 x 10⁰ o 0.035 x 10¹¹

Answer 1

See below. There should only be one digit to the left of the decimal point.

Step-by-step explanation:

o -1.23 x 10⁶ Correct

o -29 x 10⁻³ Incorrect. There should only be one digit to the left of the decimal point. -29 x 10⁻³ should be -2.9 x 10^⁻2

o -1 x 10⁴ Correct

o 4 x 10⁻¹ Correct

o 0.44 x 10¹⁴ Incorrect. There should only be one digit to the left of the decimal point. 0.44 x 10¹⁴ should be 4.4x10^13

o 3.141 x 10⁰ OK, but 10^0 is just 1, so it should be simply 3.141

o Incorrect. There should only be one digit to the left of the decimal point. 0.035 x 10¹¹ should be 3.5 x 10^9