Multiply by Ten
Estimate Products
Use Your Method
Multiply With Regrouping
Problem Solving
100
What is 1,200
100
Estimate the product 63 X 19
What is 1,200
100
Find the product using the method that works best for you: 13 X 42
What is 546
100
48 X 38
What is 1,824
100
Ella practiced 12 hours for a violin recital. There are 60 minutes in 1 hour. What is the total number of minutes Ella practiced for the recital?
What is 720 minutes?
200
10 X 90
What is 900
200
What is the best estimate for the product 43 X 68? A: 3,500 B: 2,800 C. 2,400 D: 280
What is B 2,800
200
Find the product using partial products: 15 X 24
The partial products are 200, 100, 40, and 20. The product is 360.
200
59 X 52
What is 3,068
200
The gas tank in Ava’s car holds 17 gallons of gasoline. She can drive 32 miles for each gallon. How many miles Ava can drive on a full tank of gas?
What is 544 miles?
300
For the school play, 40 rows of chair are set up. There are 22 chairs in each row. How many chairs are there in all?
What is 880
300
Estimate the product of 78 X 21
What is 1,600
300
Each student in Ms. Sike's kindergarten class has a box of crayons. Each box has 36 crayons. If there are 18 students in Ms. Sike's class, how many crayons are there in all?
648 Crayons
300
91 X 19
What is 1,729
300
Greg took a trip for 21 days. He took an average of 36 black-and-white photos and 60 color photos every day. How many more color photos than black-and-white photos did Greg take on this trip?
What is 504 pictures?
400
At West School, there are 20 classrooms. Each classroom has 20 students. How many students are at West School?
What is 400
400
A half-dollar has a diameter of about 31 millimeters. About how many millimeters long would a row of 56 half-dollars be?
What is about 1,800 millimeters
400
Solve using the method that works best for you:
16 X 19
What is 224?
400
87 X 49 =
What is 4,263
400
Grandpa’s stamp album has 48 pages. Each page has 5 rows with 4 stamps in each row. How many stamps are in Grandpa’s album?
What is 960 stamps?
500
Kenny bought 20 packs of baseball cards. There are 12 cards in each pack. How many cards did Kenny buy?
What is 240 Cards
500
How could you estimate the product 253 X 93? (Explain and find the estimated product)
I would round 253 to the nearest hundred and round 93 to the nearest ten. 300 X 90 = 27,000
500
Solve using the method that works best for you:
23 X 25
What is 575.
500
98 X 75 =
What is 7,350
500
Leo walks dogs to earn money. He makes $36 each week. He is saving to buy a racing bicycle that costs $1,350. If Leo works for one year, how much money will he make? Will he have enough to buy the racing bicycle? (Hint: 1 year = 52 weeks)
What is $1,872