Multiplying Multiples of 10
Solve 80 x 50.
4,000
Estimate the product of 27 x 21.
600
Use any strategy to find the following product: 56 x 17
952
There are 27 students in Ms. Langley's class. Each student is assigned 23 different math problems. How many math problems are assigned to the whole class?
621 math problems
A store has 57 sheets of stickers and each sheet has 12 stickers.
Makenzie broke 57 into 50 + 7 and wrote
(50 x 12) + ( 7 x 12) to find the total number of stickers. What property did she use?
Associative Property
Solve 30 x 90.
2,700
Estimate the product of 53 x 32.
1,500
Use any strategy to solve the following: 84 x 37
3,108
One school has 60 buses. Each school bus carries 34 students. If all of the school buses are full, how many students are on the school buses?
2,040 students
Mia gets paid $15 each time she walks her neighbor's dogs. She plans to walk them for the next 12 weeks.
Which equations can Mia use to find the amount of money she will earn? Choose all that apply.
A. $15 x 12 = m C. $15 x ( 10 + 2) = m
B. 12 + $15 = m D. 15 x (10 x 2) = m
A and C
Solve 60 x 21.
1,260
Estimate the product of 98 x 42.
4,000
Use any strategy to solve the following: 72 x 64
4,608
Barb exercises for 22 hours each week. How many hours does she exercise in 14 weeks?
308 hours
DOUBLE JEOPARDY
Estimate the product of 93 x 42.
3,600
The product of two factors is 7,200. If one of the factors is 90, what is the other factor?
80
About how many gallons of water are used to refill a bathtub everyday for 41 days? (A tub is full with 57 gallons of water)
2,400 gallons
What are the partial products for the following equation: 26 x 19
200, 60, 180, and 54
Bags of potatoes weigh 35 pounds each. Cases of onions weigh 19 pounds each. Estimate which weighs more: 23 bags of potatoes or 32 cases of onions.
23 bags of potatoes
When multiplying a 2 digit by a 2 digit number
you must put a zero when, you _________________.
multiply by 10
Miranda says that 30 x 26 is greater than 20 x 36. Is she correct?
Yes, because 780 is greater than 720
A store sells about 45 gadgets a day, 7 days a week. About how many gadgets might the store sell in 4 weeks?
About 1,400 gadgets
An average person in the United States eats 17 gallons of popcorn each year. How many gallons of popcorn does the average person eat in 12 years?
204 gallons of popcorn
Rose visited 23 cities on her vacation. She bought 8 souvenirs in each city to send to her friends. Rose paid $3 in postage for each souvenir she sent. How much did Rose spend?
$552
What are the partial products when multiplying
89 x 57 ?
63, 560, 450, 4000