A, divide 2.5 by 5 and you get 0.5, multiply that by 9 and you get 4.5. A is the answer
The answer would be 21/50. If you have numbers with a few zeros you can cross one of the top amd bottom until you reach the other numbers, if that makes sense. You can changd 420/1000 to 42/100. Then just keep dividing it by a numner that goes evenly into both the numerator and denominator.
11 you count by 3 with the pizzas and 2 with the side dishes
She is not correct, because $3.00 divided by 6 is 50 cents, so by using that equation she could evaluate that she is wrong and find the correct answer.
Your method is right so u already know how to do it
