Answer this question:Mary is trying to count the animals in the petting zoo, but they kept moving around so she double-counts 7 sheep and forgets to count 3 pigs. If Mary thinks there are 60 animals, how many are there really?
First subtract the 7 double - counted animals from Mary's total: 60 animals - 7 animals = 53 animals. Then add the animals she missed to find the real total: 53 animals + 3 pigs = 56 animals.
The answer is 56.

Answer this question:Mrs. Jackson has four boxes of Christmas decorations. There are 15 decorations in each box. She was only able to use 35 decorations and decided to give the rest to her neighbor. How many decorations did she give?
Mrs. Jackson had a total of 4 x 15 = 60 decorations. Then she gave 60 - 35 = 25 decorations to her neighbor.
The answer is 25.

Answer this question:Ali has a store that sells fruits and vegetables. He puts 23 kg of kidney apples, 37 kg of golden apples and 14 kg of Canada apples on the shelves. By noon, 36 kg of apples were sold. What is the mass of apples that he has left?
You first have to calculate the total mass of apples he had on the shelves, so you add the three kinds of apples: 23 kg + 37 kg + 14 kg = 74kg. Since he sold 36 kg of apples, he still has: 74 kg – 36 kg = 38kg.
The answer is 38.

Answer this question:Rafael works 10 hours on Monday and 8 hours on Tuesday on his delivery job. With 20 hours left to work in the week, how much money does Rafael make if he is paid $20 per hour?
The total number of hours that Rafael has worked by Tuesday is 8 + 10 = 18 hours. To complete his assigned work hours, Rafael works 20 hours more, making his total weekly hours to be 18 + 20 = 38 hours. Since he is paid $20 per hour, he makes $20 * 38 = $760 a week.
The answer is 760.