Estimate to Solve Problems (A1.1.1.4.1)

Which is an acceptable estimate of 27,892 + 21,941?

• 55,000

• 50,000

• 48,000

• 6,000

Which expression will result in the best estimate of 213 x 76, rounded to the nearest hundred?

• 250 x 80

• 250 x 70

• 200 x 80

• 213 x 70

Mr. Bradley and Mrs. Bradley are taking their two kids to lunch and a movie. A lunch special costs $13.25 per person, matinee movie tickets cost $7.50 each, and the cost for parking downtown is $10.75. About how much money will Mr. Bradley need to take his family to lunch and a movie?

• $4,580

• $100

• $70

• $50

A class of 33 students is taking a field trip to a museum. For students, admission is $5.75 and the show is $7.30. Which expression would result in the best estimate of the total cost of admission and the show for the class?

• 30 x $6 x $7

• 30 ($6 + $7)

• 40 x $6 x $7

• 30 ($5 + $7)

Frankie bought 8 t-shirts for $17.95 each and 5 pairs of shorts for $24.67 each. Which amount is the best estimate of the total cost of the t-shirt and shorts?

• $325

• $285

• $270

• $256

It took a crew of 18 workers four 11-hour workdays to repave one mile of roadway. The crew has to repave 32 miles total. Which expression below gives a good estimate of the number of work hours it will take the crew to repave 32 miles?

• 30 x 20 x 4 x 10

• 30 x (20 + 4 + 10)

• 30 x 20 x 4

• 30 x (20 + 4)

Tickets to a concert were on sale for three days. The number of tickets sold each day are: 5,807 tickets, 7,210 tickets, and 6,905 tickets. If the average ticket price was $28, which number is closest to the total amount of money for ticket sales to the concert?

• $500,000

• $550,000

• $600,000

• $650,000

The land area of Bernard’s hometown is 38 square miles. The population of his town is 40,390 people. Which number is closest to the average number of people per square mile in Bernard’s hometown?

• 1000 people

• 1025 people

• 1100 people

• 1400 people

Jessica works 31 hours each week. She earns $17.25 an hour. Which is closest to the amount of money Jessica will earn if she works for 48 weeks?

• $23,000

• $26,000

• $28,000

• $32,000

At the start of the year, Mr. Richardson’s investments totaled $24,251. At the end of the year, his investments totaled $27,118. Which shows the approximate change per month in Mr. Richardson’s investments?

• $150

• $200

• $250

• $300