9000
1.45*100 but the exponent of 10 is unnecessary.
0.00001207 = 1.207E-5
3.5 x 108 = 350,000,000
Convert each item to standard form before addition. To convert scientific form to standard form move the decimal point the number of digits given by the exponent, if positive to the right, if negative to the left; if the digits run out insert zeros. If no decimal point is visible it is "hiding" after the last digit. 8 x 10¹ = 80 3 × 10^-3 = 0.003 → 8 × 10¹ + 3 × 10^-3 = 80 + 0.003 = 80.003
4.53*10-6 0.00000453 is in standard notation just move the decimal place over how ever many times the exponent is on the 10
5.75 × 109 written in regular notation is 5,750,000,000
The number 0.00056 in standard index form can be expressed as (5.6 \times 10^{-4}). This is achieved by moving the decimal point four places to the right, which corresponds to the negative exponent of 10.
In standard form, the number 49 is written as 4.9 x 10^1. This is because standard form is a way of writing numbers as the product of a number between 1 and 10 and a power of 10. In this case, 4.9 is between 1 and 10, and the exponent 1 indicates that the decimal point is moved one place to the right.
23 000. This is standard form and should be written as: 23 x 10^2. (The ^ denotes an exponent.)
The number 0.00009 in standard form can be expressed as (9 \times 10^{-5}). This is achieved by moving the decimal point four places to the right, which shifts the exponent of 10 to negative five. In standard form, the leading number must be between 1 and 10, which is satisfied here with 9.
100
15