4.OA.2
Multiplication and Division Comparisons
Multiplication and Division Comparisons
A building is 72 feet tall. This is 9 times as tall as the moving truck parked beside it. How tall is the moving truck?
72 =9 x N
N=8 feet
Mr. Farmer has $25 to divide evenly among his 2 children. After dividing it, he had $1 left. How much did each child get?
$25-$1=$24
$24/2=$12
Choose a strategy to solve.
32 x 14
448
At Frank’s Flower Shop they split 84 flowers into 3 packages with the same amount of flowers in each package. How many flowers were in each package?
84/3 = 28
There were 28 flowers in each.
List the first 5 multiples of 4.
(Hint: Skip Counting)
4,8,12,16,20
Mrs. Vogan and Mrs. Senters picked apples. Mrs. Vogan picked 21 apples. She picked 3 times as much as Mrs. Senters. How many apples did Mrs. Senters pick?
21 = 3 x N
N=7 apples
Max's favorite video games are on sale for $6 each. He has $20 in his wallet, but he needs to save $5 for lunch. How many video games can he buy?
$20-$5=$15
$15/6= 2 R3
He can buy 2 video games and will have $3 left over.
Choose a strategy to solve.
43 x 45
1,935
Maggie is making bags of beads for 8 of her friends. She has 592 beads. If she wants to give each friend an equal amount of beads, how many beads will each friend get?
592/8= 74
Each friend will get 74 beads.
List all the factors of 6.
(Hint: Factor Rainbow)
1,2,3,6
A piece of yarn is 8 cm long. A piece of string is 24 cm long. How many times longer is the piece of string than the piece of yarn?
8 x N = 24
N=3 times longer
A cupcake bakery made 6 vanilla cupcakes, 12 chocolate cupcakes, and 24 strawberry cupcakes. The 3 bakers made an equal number of cupcakes. How many cupcakes did each baker make?
6+12+24=42 cupcakes in all
42/3=14 cupcakes
Each baker made 14 cupcakes.
68 x 39
2,652
Mrs. Stewart has 741 seashells that she is splitting up equally between 6 of her students. How many will each student get and how many will be left over?
741/6= 123 R3
Each student will get 123 seashells with 3 left over.
Which of the following is a prime number?
A. 12
B. 6
C. 11
D. 8
A prime number only has two factors, 1 and itself.
C. 11
Mr. Rich saved $28 this month. Last month he saved $7. How many more times as much money did he save this month than last?
$7 x N = $28
N=4 times as much
Molly had 120 books and got 12 more for her birthday. She put them into piles, with 6 books in each pile. How many piles did she make?
120+12=132 books
132/6=22
There were 22 piles of books.
Cassie gives her dog treats to perform tricks during a dog show. If Cassie gives her dog 34 treats each show, how many treats will she need for 22 shows?
34 x 22 = 748
She will need 748 treats.
The baker at the Cookie Bakery made 325 cookies. He packaged them in containers with 7 cookies per container. After using all the cookies to fill each container with 7 cookies, there were a few left over. How many cookies were left over?
325/7= 46 R3
There are 3 cookies left over.
Which of the following is a composite number?
A. 24
B. 23
C. 29
D. 31
A composite number has more than two factors.
A. 24
There are 100 fish in a pond. There are 4 times as many fish as tadpoles. How many tadpoles are there?
4 x N = 100
N=25 tadpoles
Matt earns $6 per hour spreading mulch and $4 per hour pulling weeds. Last week, Matt spent 3 hours spreading mulch and 2 hours pulling weeds. How much money did Matt earn?
$6x3=$18 spreading mulch
$4x2=$8 pulling weeds
$18+$8=$26
He earned $26.
There are 3 fourth grade classes with 27 students in each class. If each student needs 12 notebooks for the year, how many notebooks are needed in all?
27 x 3 = 81 students in all
81 x 12 = 972
They will need 972 notebooks.
A school had 1,848 pencils to give to 8 classrooms. If the pencils are divided evenly, how many will each class get?
1,848/8= 231
Each class will get 231 pencils.
What are the factors of 36?
1,2,3,4,6,9,12,18,36