Myra has onions, mushrooms, broccoli, and green peppers. How many combinations of 3 different vegetables can she put on a pizza?
4 combinations: OMB, OBG, MBG, OMG
100
54 x 17 =
918
100
242 x 30 =
7,260
100
Tell what computation method you would use to solve 50 x 90. Then use this method to find the answer.
Mental Math; 4,500
200
Estimate the product: 22 x 32
20 x 30 = 600
200
Mary gets paid $12 each week. How much money will she have earned in 5 weeks?
$60
200
37 x 83 =
3,071
200
324 x 38 =
12,312
200
What method would you use to solve 600 x 40? Find the solution.
Mental Math; 24,000
300
Use mental math to solve: 50 x 5,000
250,000
300
Chester receives $4 a week from his dad for doing his weekly chores. Chester wants to save up the money he earns from doing chores to buy a new video game. If the video game costs $38, then how many weeks will it take before Chester can buy the game? Make a table to find the answer.
It will take 10 weeks: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
300
70 x 39 =
2,730
300
Find the product of 828 and 34.
28,152
300
Which computation method would you use to solve 224 x 21? Paper and pencil or mental math. Explain why.
Paper and pencil; Check student explanations
400
Estimate the product: 53 x 108
50 x 100 = 5,000
400
Ann, Mara, Jenny, Tina, and Sue are sisters. Two of the five sisters must help their father at his business each Saturday. How many combinations of two sisters are possible?
There are 144 pencils in one box. How many pencils are in 27 boxes?
3,888 pencils
400
What computation method would you use to solve 324 x 42? Use that method to find the solution.
Paper and pencil, 13,608
500
Estimate the product: 26 x 389. Then determine whether the estimate is an overestimate or an underestimate.
30 x 400 = 12,000, Overestimate
500
Sarah collects plastic banks. She has three different banks: a pig, a cow, and a horse. How many ways can Sarah arrange her banks on a shelf?
6 ways: PCH, PHC, HCP, HPC, CHP, CPH
500
A car company has 64 packages delivered to a warehouse. If each package contains 88 keys, then how many keys did the car company receive in the delivery?
5,632
500
A large theater has 25 rows of seats. If each row can seat 123 people, then how many people can be seated in the theater?
3,075 people
500
Give an example of a problem that would be solved by using Mental Math. Then give an example of a problem that would be solved by using Paper and Pencil.