Rounding
Round 16,249 to the nearest ten.
16,250
Kaitlyn ordered 19 display stands. Each stand costs $213.50. What is the best estimate of the total cost of the display stands?
A) $10,000
B) $7,500
C) $4,000
Approximately 20 stands x approximately $200 each.
$200 x 20 = $4,000
When comparing decimals, the number with the greatest number of digits is always the greater number.
True or False
False.
Example: 1.23 is not greater than 1.3
The term to help you remember the Order of Operations is:
"Please Tell My Aunt Mary To Leave"
True or False
False
"Please Excuse My Dear Aunt Sally"
Parentheses Exponents Multiply Divide Add Subtract
A camera regularly priced at $399.99 is on sale for 10% off. Which is the best estimate of the camera's sale price?
A) $360
B) $300
C) $390
A) $360
Round 194 to the nearest hundred.
200
Jamie will make 48 equal payments to pay off a loan of $2,464.75. What is the best estimate of the amount of each payment?
A) $60
B) $50
C) $45
$2,500 divided by 50 = $50
The whole number with the greatest number of digits is always the greatest.
True or False
True
123 is greater than 12.
Last week Cassie sold 153 raffle tickets. This week she sold 207 tickets. The price of each ticket is $5. Which expression tells the value of the tickets she sold in the two weeks?
A) 153 x 207 x $5
B) (153 x 207) + $5
C) $5 (153+207)
C) $5 (153+207)
At the music store, a CD is on sale for $14.50. What is the total cost of the CD if the sales tax is 5%?
A) 14.90
B) 14.55
C) $15.23
C) $15.23
Round 48 to the nearest hundred.
0
Estimate the average number of sandwich sales per day: M) 619 T) 521 W) 622 Th) 549 F) 704 S) 683
600+500+600+500+700+700 divided by 6 = 600
Janet has packages to mail with the following weights: 0.76, 0.6, 0.07, and 0.08. Which of the following lists shows the weights from least to greatest?
A) 0.6, 0.8, 0.76, 0.07
B) 0.07, 0.6, 0.76, 0.8
C) 0.07, 0.76, 0.6, 0.8
B) 0.07, 0.6, 0.76, 0.8
Jim orders 3 denim shirts for $16/ea and 2 sweatshirts for $22/ea. If Jim pays $11 for shipping, which expression gives the total cost of his order?
A) (3 x $16) x (2 x $22) x $11
B) (3 x $16) + (2 x $22) + 11
B) (3 x $16) + (2 x $22) + 11
A new kitchen table is on sale for 20% off. The original price is $860. How much is the table on sale for?
A) $688
B) $600
C) $599
A) $688
Round 16,249 to the nearest thousand.
16,000
Lateisha's car gets 42 miles per gallon. Approximately how far can she drive on a full tank of 19.5 gallons?
A) Less than 600 miles
B) Between 750 and 850 miles
C) More than 1,000 miles
40 mpg x 20 gallons = 800 miles
Answer B) Between 750 and 850 miles
Alice buys a sandwich for $2.25 and a drink for $0.75. She pays with a $10 bill. Which expression shows how to find the amount of her change?
A) $2.25 + $75.00 = $10.00
B) $10.00 - ($2.25 + $0.75)
C) $10.00 + ($2.25 - $0.75)
B) $10.00 - ($2.25 + $0.75)
When doing order of operations, you should work right to left.
True or False
False, left to right
A clock that regularly sells for $18 is on sale for 30% off. How much is the clock?
A) $12.60
B) $17.99
C) $13.60
A) $12.60
There were 4,289 fans at today's basketball game. Round 4,289 to the nearest hundred.
4,300
Karen's car loan is $15,000, and she will make 50 equal payments. How much is her car payment each month.
A) $400
B) $300
C) more than $500
$15,000 divided by 50 = $300
The Walkers pay $0.1165 for each kilowatt-hour of electricity they use. Their friends pay $0.095 per kilowatt-hour. How much more do the walkers pay for each kilowatt-hour than their friends?
A) $0.0125
B) $0.126
C) $1.0665
A) $0.0125
$0.1165 - $0.095 = $0.0125
Cole has 2 jobs. He works 15 hours each week for $12 hr at Car Car, and 20 hours per week for $10 an hour at Auto Depot. Which expression tells how much Cole earns per week?
A) $11 x (15 + 20)
B) ($10 + $12) x (15 + 20)
C) (15 x $12) + (20 X $10)
C) (15 x $12) + (20 X $10)
How many days until Christmas?
25