Multiplication Comparisons
Estimating Products
Using Mental Math to multiply
Multi-step multiplication
Order of Operations
100
At the dog show, there are 4 times as many boxers as spaniels. If there are a total of 30 dogs, how many dogs are spaniels?
What are 6 spaniels?
100
John Bowne Elementary is having a car wash to raise money for a community horse trail. Each car wash ticket costs $8. Acelin says the school will receive $1,000 if 125 tickets are sold. Is Acelin's answer reasonable? Explain.
Yes because $1,000 is between $800 and $1,600
100
Irence and Jason C. each bought 6 books of ride tickets at the fair. Each book has 15 tickets. How many tickets did they buy all together?
180 tickets.
100
At a tree farm, there are 9 rows of 36 spruce trees. In each row, 14 of the spruce trees are blue spruce. How many spruce trees are not blue spruce?
What are 198 spruce trees?
100
6 X 27 + 2 X 47 -83 = n ... What is n?
173
200
Ivan has 3 times as many guppies as goldfish. If he has a total of 20 fish, how many guppies does he have?
What are 15 guppies?
200
Steven sells horse supplies. A pair of riding gloves sells for $16. He says he will make $144 if he sells 9 pairs. Is Steven's answer reasonable?
Yes because $144 is between $90 and $180.
200
The science museum sells dinosaur models to schools and libraries for $107 each. The town library buys 3 models. the town elementary schools buys 5 models. What is the total cost of the models the town buys?
$856
200
Diancheng is tiling a countertop. He needs to place 54 square tiles in each of 8 rows to cover the counter. He wants to randomly place 8 groups of 4 blue tiles each and have the rest of the tiles be white. How many white tiles will Diancheng need?
What are 400 white tiles?
200
5 x 12 + 4 x 20 -15 = n. What is n?
125
300
Selina saw 5 times as many robins as cardinals while bird watching. She saw a total of 24 birds. How many more robins did she see than cardinals?
What are 16 more robins?
300
A auditorium has 4,650 seats. If the auditorium sells all the tickets for each of its 5 shows, about how many tickets will the auditorium sell?
About 25,000 tickets.
300
At a high-school gym, the bleachers are divided into 6 equal sections. Each section can seat 395 people. How many people can be seated in the gym?
2,370 people
300
Stephanie, Janice, and Tiffany each bought a toy fish. Stephanie's fish is 10 inches longer than Janice's fish. Tiffany's fish is 2 inches longer than twice the length of Janice's fish. Janice's fish is 12 inches long. Find the length of each toy fish.
Stephanie fish is 22 inches long and Tiffany's fish is 26 inches long.
300
A bakery has 8 tray with 11 muffins on each tray. The bakery has 4 trays of cupcakes with 22 cupcakes on each tray. If 14 cupcakes are sold, how many muffins and cupcakes are left?
162 cupcakes are left.
400
Last weekend, Janice collected 4 times as many shells as Tiffany. Together, they collected 40 shells. How many shells did Janice collect?
What are 32 shells?
400
Students in fourth grade sell 265 tickets to the school play. Students in the fifth grade sell 3 times as many tickets as the fourth grade students. Estimate the number of tickets the fifth students sold by finding the two numbers the exact answer is between.
The students sold between 600 and 900 tickets.
400
Pencils come in cartons of 24 boxes. P.S. 20 John Bowne bought 50 cartons of pencils for the start of school. Each box of pencils cost $2. How much did the school spend on pencils?
$2,400
400
There are 9 rows of 25 chairs set up for an awards ceremony at the school. In each row, the 2 chairs on each end are reserved for students receiving awards. The rest of the chairs are for guests. How many chairs are there for guests?
189 chairs for guests.
400
Angel has 2 binders with 25 stamps in each binder. She has 5 binders with 24 baseball cards in each binder. If she gives 35 stamps to a friend, how many stamps and cards does she have left?
135 stamps and cards left.
500
Jolina scored a total of 35 points in two games. She scored 6 times as many points in the second game as in the first. How many more points did she score in the second game?
What is 25 more points ?
500
Path F and Path D are walking paths used for horses. Path F os 118 feet long. Path D is 180 feet long. Darren walks his horse down each path 3 times. Which Path did Darren use to walk his horse about 500 feet? Explain.
Path D because 180 rounds to 200 and 200 X 3 = 600. Also, 118 rounds to 100 and 100 X 3 = 300. 600 is closer to 500 than 300 is.
500
Three thousand, forty-three people buy tickets for section E and one hundred people buy tickets for section L. If section E tickets cost $25 each, and section L tickets cost $35 each, how much money is collected for both sections all together?
$79,575
500
Angela is building a patio. The patio will have 6 tiles in each of 12 rows. She has already built the center section with 4 tiles in each of 7 rows. How many more tiles are needed to complete the patio?
44 more tiles are needed to complete the patio.
500
Daniel has 6 boxes with 32 marbles in each box. He has 8 boxes with 15 shells in each box. If he gets 18 marbles from a friend, how many marbles and shells does he have?
330 marbles and shells.
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