IM ON MY SISTER ACC AGAIN AND I NEED HELP!!!

Answer:
0.4, 4, 40, 400
600, 60, 6, 0.6
Step-by-step explanation:
Answer:
Divide by 10:
600, 60.0, 6.00, 0.6
Multiply by 10:
0.4, 4, 40, 400
When dividing, move the decimal point to the left, when multiplying move the decimal point to the right.