Math Operations/Decimals
Three Part answer:
When one number is divided by another, the result is called what? What is the number that is being divided called? What is the number used to divide the dividend called?
1. Quotient
2. Dividend
3. Divisor
What is the definition of LCM & GCF?
LCM: The least common multiple is the smallest number that two or more numbers can multiply into evenly.
GCF: The greatest common factor is the biggest number that divides two or more numbers evenly.
Each elf decorates 2 ½ stockings per hour. If they work for 3 hours, how many stockings do they decorate?
2 ½ × 3 = 5/2 × 3 = 15/2 = 7 ½ stockings
Two part question:
What is the area formula for a triangle?
What is the surface area formula of a rectangular prism?
Base x Height / 2
2( LW+LH+HW)
How many points do you get for completing your semester exam review?
10
Mrs. Claus baked 54.6 cookies using 0.15 pounds of dough per cookie. How many pounds of dough did she use?
Total dough = 54.6 × 0.15 = 8.19 pounds.
Santa needs identical candy-cane gift packs using either 18 or 30 canes per pack. What size pack can he make so both pack sizes fit evenly?
LCM(18, 30) = 90
An elf ran 17/6 miles during training. Write this as a mixed number.
17/6 = 2 5/6
Santa’s gift box is 4 ft long, 3 ft wide, and 2 ft high. What is the total wrapping paper needed?
SA = 2(lw + lh + wh) = 2(4·3 + 4·2 + 3·2) = 2(12 + 8 + 6) = 2·26 = 52 ft²
What is Unit Rate?
A unit rate tells how much of something happens per one of another thing,
Santa is stuffing stockings. Each stocking ends up weighing 3.75 pounds after he adds 0.15 pounds of candy per scoop. How many scoops did he use?
Scoops = 3.75 ÷ 0.15 = 25 scoops.
Mrs. Claus bundles gingerbread cookies into portions using 45-cookie and 75-cookie trays. What is the greatest number of cookies per identical bundle that divides both tray sizes?
GCF(45,75) = 15
A holiday train traveled 73/12 miles. Write this distance as a mixed number.
6 1/12
A snowflake-shaped triangle has angles 55° and 85°. Determine the missing angle.
180 - (55 + 85) = 180 - 140 = 40°
A Christmas cookie recipe uses 18 cups of flour for 6 dozen cookies. How many cups of flour are used per dozen cookies?
18 ÷ 6 = 3 cups per dozen cookies
A snow globe factory packs 0.48 liters of liquid into each globe. A large container holds 19.2 liters. How many globes can be made?
Globes = 19.2 ÷ 0.48 = 40 globes.
A decorative tile pattern repeats every 32 and 48 tiles on different sides of a giant cookie table. What is the smallest repeat length that matches both patterns?
LCM(32,48) = 96
A Christmas train travels 3 2/5 miles for each loop around the village. If it completes 6 1/2 loops, how far does it travel?
22 1/10 miles
An elf cuts a triangular cookie with a base of 10 in and a height of 6 in. What is the cookie’s area?
Triangle area = ½·base·height = ½·10·6 = 30 in²
Santa delivers 240 gifts in 6 hours. How many gifts does he deliver per hour?
240 ÷ 6 = 40 gifts per hour
A holiday train travels 7.28 miles using 0.013 gallons of fuel per mile. How much fuel does the train use in total?
Total fuel = 7.28 × 0.013 = 0.09464 gallons.
Three caroling squads have sizes 21, 14, and 35. If Santa wants to form the largest possible equal small teams with no splitting, how many singers in each small team?
GCF(21,14,35) = 7
Santa fills each toy bag with 4 ¾ pounds of gifts. If he fills 9 bags, how many pounds of gifts does he pack in all?
19/4 × 9 = 171/4 = 42 ¾ pounds
An ornament cube has edges 67 cm long. How much wrapping paper is needed for all six faces?
67 x 67 = 4,489
4,489 x 6 = 26,934
A snow machine produces 75 pounds of snow in 5 hours. How many pounds of snow does it produce per hour?
75 ÷ 5 = 15 pounds per hour