Word Problems 1
A pizza shop makes 16 pizzas. Each pizza is cut into 8 slices. Students eat 95 slices during a school event. How many slices are left?
There are 33 slices left.
Solve using an area model:
19 x 26
494
A bakery makes 18 trays of cookies. Each tray has 16 cookies. The bakery sells 125 cookies. How many cookies are left?
There are 163 cookies left.
The answer to a subtraction problem.
Difference
A school orders 28 boxes of markers with 31 markers in each box. About how many markers will they receive?
30 x 30 = 900 markers
A gamer earns 125 coins each time they complete a level. They complete 6 levels and then spend 200 coins on a new character. How many coins do they have left?
They have 550 coins left.
Solve using an area model:
31 x 25
775
A school is having a movie day. There are 8 classes with 24 students in each class. Each student gets 2 pieces of candy. How many pieces of candy are needed altogether?
384 pieces of candy is needed.
The numbers that are multiplied in an expression. Ex: 2 x 3
Factors
A movie theater has 39 rows with 22 seats in each row. About how many seats are there?
40 x 20 = 800 seats
The school library received 15 boxes of books for the book fair. Each box had 24 books. The librarian gave 50 books to another school. How many books does the library have left for the book fair?
The library has 310 books left for the book fair.
Solve using an area model:
29 x 27
783
Mrs. Northcutt buys 9 boxes of snacks. Each box has 18 snacks. She gives 5 snacks to each of her 4 table groups. How many snacks does she have left?
She has 142 snacks left.
The answer to a multiplication problem.
Product
A video game store sold 37 games on Saturday. Each game cost $21. About how much money did the store make? Use compatible numbers to estimate.
35 x 20 = $700
Richlands fourth-grade class is going on a field trip. There are 4 buses with 48 seats on each bus. There are 157 students and 12 teachers going. Are there enough seats? If so, how many empty seats will there be?
There are 23 empty seats left on the bus.
Solve using an area model:
58 x 32
1,856
A concert has 24 sections with 18 seats in each section. There are also 16 VIP sections with 12 seats in each section. How many seats are there altogether?
There are 624 seats altogether.
A math property that states the order in which we add or multiply numbers will not change the answer.
Ex: 4 x 5 = 5 x 4
Commutative Property
An animal shelter has 48 kennels with about 19 dogs in each kennel. About how many dogs are there?
50 x 20 = 1,000 dogs
Mrs. Holland's 4th-grade class is collecting books for a classroom library. Each of her 26 students collected 14 books. The class donated 75 of the books to another classroom.
How many books does Mrs. Holland's class have left?
Mrs. Holland's class has 289 books left for their classroom library.
Solve using an area model:
65 x 42
2,730
A theater has 16 rows with 24 seats in each row. For the first show, 175 seats are filled. For the second show, 96 more seats are filled. How many seats are still empty?
There are 113 empty seats.
A math property that says when you multiply numbers, the way you group them does not change the answer.
Associative Property
A school is planning a field day. They expect 56 students to participate, and each student will need 19 ounces of water. Use compatible numbers to estimate how many ounces of water the school should plan for.
55 x 20 = 1,100 ounces of water