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Mystery
100

What is the sum of 5.67 + 6.819?

12.489

100

What is the difference of 6.72 - 3.5 ?

The difference is 3.22.

100

Find the product of 6 x 5.1

The product is 30.6

100

What is the quotient of 5 / 0.5 ?

(/ means division)

10

100

Ezra buys carrots on sale for $0.90 per pound. He buys 0.8 pound of carrots. How much does Ezra pay for the carrots? Use an area model to solve. 

Ezra pays $0.72 for the carrots. 

200

Sabrina and Christie are running in a relay. Sabrina runs 100 meters in 13.6 seconds. Christie runs the same distance in 12.2 seconds. What is their total time?

Their total time is 25.8 seconds.

200

The mass of a female hummingbird is 4.5 grams. The mass of a male hummingbird is 3.2 grams. What is the difference between the masses of the female and male hummingbird? 

The difference in masses is 1.3 grams.

200

A person's hair grows 1.2 centimeters in 1 month. How much would the person's hair grow in 9 months? 

10.8 centimeters 

200

Coach Ann is setting up a 2.7 kilometer race. She uses flags to mark off 9 equal sections of the race. How far apart should she space the flags to mark off the sections? (ask yourself what is being divided. That will be your first number in the equation.)

The distance between flags will be 0.3 kilometers. 

200

What is the quotient of 0.99 / 11? 

(/ = division)

9 hundredths or 0.09

300

Manny and Soo went mountain biking. They biked 15.36 kilometers on the red trail and then rode 13.5 kilometers on the blue trail. What was the total distance they biked?

Manny and Soo biked 28.86 kilometers. 

300

Tamara caught a fish that weighs 5.6 pounds. Victoria caught a fish that weighs 3.4 pounds. What is the difference between the weights of the fish?

The difference in weights is 2.2 pounds.

300

Harry has 0.5 of a bottle of water in his gym bag. The bottle holds 0.9 liter of water. How many liters of water does Harry have? 

Harry has 0.45 liter of water. 

300

How much will each person receive if $20.35 is split equally among 5 people?  (ask yourself what is being divided. That will be your first number.)

$4.07

300

Peter earns $12.40 each week for completing his chores. Ria earns 1.2 times as much money per week as peter. How much does Ria earn each week? 

Ria earns $14.88 each week. 

400

From his home, Tim rides the bus 3.82 miles. Then he walks 0.4 mile from the bus stop to school. How many miles does Tim travel from home to school? 

Tim travels 4.22 miles from home to school. 
400

Marty eats 2.05 ounces of cheese from a 4.6 ounce block of cheddar cheese. How many more ounces of cheddar are left? 

2.55 ounces of cheese are left. 

400

Manuel painted 0.75 of a rectangular banner green. After the paint dried, he painted 0.6 of the green area orange. What part of the banner is painted orange? 

0.45 of the banner is painted orange. 

400

Grant has 3.6 pounds of pretzels. He puts the pretzels into bags that each hold 0.3 pound. How many bags does Grant use to hold the pretzels? (ask yourself what is being divided. That will be your first number in the equation.)

He has 12 bags of pretzels. 
400

Rosa filled her car's tank with 9.8 gallons of gas. Each gallon costs $3.85. How much did Rosa spend on gas?

Rosa spent $37.73 on gas. 

500

Jorge spends $42.75 on a new jacket and $88.30 on a pair of running shoes. How much money does he spend in all? 

Jorge spends $131.05.

500

Galen can reach up to a height of 1.87 meters while standing flat on the ground. His father can reach a height of 2.56 meters. How much higher than Galen can Galen's father reach? 

Galen's father can reach 0.69 meters higher. 

500

Jaden made a rectangular sign that is 1.4 meters long and 1.2 meters wide to post on the wall of his store. How many square meters (area) of wall does the sign cover? 

1.68

500

A fence is 52.5 meters in length. Posts divide the fence into sections that are each 3.5 meters in length. How many sections are in the fence? 

15 sections

500

Fiona has $1.20 with which to buy some ribbon. The ribbon is on sale for $0.08 per foot. How many feet of ribbon can Fiona buy?

Fiona can buy 15 feet of ribbon.