Estimation
Mr. Lowry eats 42 pieces of cantaloupe a day. About how many pieces will he eat in October. (October has 31 days).
Mr. Lowry will eat about 1,200 pieces.
Jeremy buys a baseball for $3.99 and some chips for $4.25. He gives the cashier a twenty dollar bill. How much change will he receive?
Jeremy will receive $1.76 in change.
Lilli buys 7.4 pounds of turkey at the store. Each pound of turkey costs $7.99. About how much does she spend?
Lilli spends about $56.
Calculator:
Cohen bought 2 video games at the store. Each game cost $27.98 He gave the cashier three 20 dollar bills. How much change did he receive.
Cohen received $4.04
Cole practices his bass for 1.5 hours in the morning and 2 hours at night. How much will he practice his bass in the month of October? (October has 31 days.)
Cole will practice his bass for 108.5 hours.
Mr. Lowry is solving the problem 4.7 x 0.56. The product he gets is 26.32. Ariana tells him his answer is not reasonable. Use estimation to explain Ariana's thinking.
His answer is not reasonable because 4.7 would estimate to 5 and 0.56 would estimate to 1.
5 x 1 = 5. Mr. Lowry's answer is too high!
Calculator
Leslie bought a hat for $11.97 and a sweater for $19.78. She paid with four 10 dollar bills. How much change did she receive?
Leslie received $8.75 in change.
Calculator:
Alice makes $23 dollars every hour she works at the library. If she worked 34 hours her first week and 27 hours her second week, how much money did she make in her first two weeks?
Alice made $1,403.
Multiply:
46 x 32
Estimation: 1,500 (50 x 30)
Answer: 1,472
Michael eats 12 oranges everyday. In a year with 365 days, about how many oranges will he eat?
Michael will eat between 3,600 and 4,000 oranges.
Calculator:
Mr. Lowry shoveled driveways during the winter as a kid in the year 1943. He charged $15 dollars per driveway. If he shoveled 22 driveways in January and 32 driveways in February, how much money did he make that winter?
Mr. Lowry made $810.
Multiply:
4.6 x 0.75
Answer: 3.45
Kessel drove 1,506 miles to Miami. He still has 169 miles before arriving to Key West. How far will he have traveled once he arrives to Key West?
Kessel will have traveled 1,675 miles.
If Dino eats 9 personal pan pizza in a year with 365 days, Harrison estimates he will eat about 4,000 personal pan pizzas. Is Harrison's estimate an over estimate or an underestimate?
Harrison's estimate is an overestimate because he raised both numbers t(factors).
Multiply:
365 x 43
Answer:
15,695
Brook is driving 494 miles to Boston. That is 45 miles further than Clare has to dive. How far does Clare have to drive to Boston?
Clare has to drive 449 miles to Boston.