Mrs. Ruiz bought 5 bags of balloons for a party. Each bag contained 70 balloons. Andy said mrs. Ruiz bough a total of 75.Andy is incorrect what error did Andy make when calculating the total number of balloons

Andy added 70 to 5 instead of multiplying 70 by 5.

Step-by-step explanation:

We have been given that Mrs.Ruiz bought 5 bags of balloons for a party. Each bag contained 70 balloons. Andy said Mrs.Ruiz bough a total of 75. Andy is incorrect what error did Andy make when calculating the total number of balloons.

To find the total number of balloons in 5 bags, we will multiply number of balloons in each bag by 5.

Therefore, the total number of balloons in 5 bags would be 350 balloons.

Andy added 70 to 5 instead of multiplying 70 by 5.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: