order of operations
What does PEMDAS mean?
It is a mnemonic device for remembering order of operations. Parenthesis, exponents, x / + -
Find 3 consecutive even integers that have a sum of 168.
54, 56, 58.
What are the months of the year that do NOT have 31 days?
February, September, April, June, November.
what is the formula for calculating the interior angles of a regular polygon?
Number of sides minus 2 times 180
William had dinner at a restaurant. His meal cost $24.00. He wants to leave a 20% tip. What will his bill be including the tip?
$28.80
( 42 X 2) / 23
4
Find 4 consecutive positive integers that have a product of 120.
2,3,4,5.
Gavin worked for 13.5 hours and was paid $14 per hour. How much was his total pay?
$189.00
What is the formula for finding the area of a circle?
area= pi x r x r
What is the prime factorization for the number 120?
23 x 3 x 5
6 x 10 x (10 + 8)
1080
Find 3 consecutive odd integers that have a sum of 75.
23, 25, 27.
Ian took 75% of the money in his bank account and spent it on basketball camp. He originally had $180 in his account. Of the money he took out he spent half on new sneakers. How much did he spend on sneakers?
$67.50
75% of 180 is 135
half of 135 is 67.50
What is the formula for finding the circumference of a circle?
pi X diameter
The pizza store is having a 40% off sale on pizzas. If the pizza you want regularly costs $13.00, how much would you save with the discount?
$5.20
( 8 x 3 - 18 / 6 x 3 + 62 / 12) / 2
9
Find 3 consecutive odd integers that have a product of 315.
5,7,9.
Daily Double*****
What is the best deal?
Deal A: 31 pens for $8.36
Deal B: 13 pens for $2.60
Deal C: 78 pens for $16.38
Deal B
What is the formula for finding the area of a triangle?
Area= 1/2 the base x height
What is the prime factorization for 650?
2 x 52 x 13
( 33 + 3) / (23 + 2) + 16 / 42 x 4 + 5
12
Find 5 consecutive integers that have a sum of 400.
78,79,80,81,82.
Andrew bought a bat for $18.73. He gave the cashier $20.00 The cashier didn't have dollar bills so she had to give Andrew all change, using quarters, dimes, nickels, and pennies. How many nickels did he receive if he received a total of 15 coins?
1, 4, or 7. All are correct.
What is the divisibility rule for 3 and 9?
3- the sum of the last three digits of the #
is divisible by 3.
9-the sum of the digits of the whole # is divisible by 9.
What is 38.2 x 1.45?
55.39