Number 1. Round 54,692,452 to the nearest hundred.

54692452.00

Step-by-step explanation:

I’m not sure if ur looking for an answer for all of those questions or just for the first one. In case u are just looking for the first one, the answer is 54,692,500. Hope this helped! ;)

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000