Decimals & Standard Form

Question 1

What do you need to convert between?

Answer 1

standard form to decimal

decimal to standard form

Question 2

What would you not get a mark for with this?

8 x 10^-2

Answer 2

it is meant to be 8.0 x 10^-2

Question 3

Convert 0.000016m to standard form

Answer 3

= 1.6 x 10^-5m

Question 4

Calculate (3.0 x 10^4) x (6.0 x 10^2)

Answer 4

multiply the numbers first so 3.0 x 6.0 = 18.0
add the smaller subscripts so 4 + 2 = 6

the number must be between 1 - 10 so we have to change 18.0 to 1.8

= 1.8 x 10^7

Question 5

Convert 0.00070 to standard form

Answer 5

7.0 x 10^-4

Question 6

Convert 1.96 x 10^-5 to decimal

Answer 6

0.0000196

Question 7

Convert 3640000 to standard form

Answer 7

3.64 x 10^6

Question 8

Convert 112.9 x 10^4 to number

Answer 8

1129000