What the math?
Decimal Dynamo
Decimal Disguise
Decimal Lab
Decimal Detectives in the Wild
100
91.8-1.64
A. 7.54
B. 75.4
C.90.16
90.26
C.90.16
100
One candy bar costs 48¢. Two candy bars cost 96¢. If the cost of each candy bar remains the same, how much will 5 candy bars cost?
A. $1.44
B. $ 1.92
C. $2.40
D. $ 2.48
C. $2.40
100
Put 18.73 in expanded notation
(1x10)+(8x1)+(7x0.1)+(3x0.01)
100
3.25 x .06 =
A. 0.54
B. 1.95
C. 5.42
D. 19.5
B. 1.95
100
In a wetland ecosystem, a scientist is studying frogs. She records how much each frog weighs.
Frog A weighs 0.85 kg
Frog B weighs 1.2 kg
Frog C weighs 0.95 kg
Question:
What is the total weight of all three frogs combined?
3.00 kg
200
Renee and Mani sold cookies to raise money for the school library. Mani earned $109.30 and Renee earned $142.15. How much more money did Renee earn than Mani ?
A. $ 32.75
B.$32.85
C.$131.22
D. $251.45
B.$32.85
200
Write 24.25 in word form.
twenty-four and twenty- five hundredths.
200
Compare the following numbers.
0.3+0.01+4.0_____4.31
=
200
Compare using >,<,or, =. SHOW YOUR WORK
0.17 __ 0.186
<
200
In a rainforest ecosystem, scientists measure rainfall over 3 days:
Day 1: 2.35 cm
Day 2: 1.8 cm
Day 3: 3.25 cm
Question:
How much rainfall fell in total over the 3 days?
7.40 cm
300
Put this number into expanded notation. 4.921
(4x1)+(9x0.1)+(2x0.01)+(1xx0.001)
300
Round 19.379 to the nearest hundredth.
19.38
300
Jace spends $1.22 every morning on his breakfast. What is the total amount of money he spends on breakfast for 6 mornings? Write an expression to support your answer.
1.22x6=7.32
300
Order from least to greatest.
12.987
12.3
13.009
12.04
12.04
12.3
12.987
13.009
300
A marine biologist is feeding fish in an ocean tank. She has 6.4 kilograms of fish food to feed 8 fish.
Question:
If she divides the food equally, how much food does each fish get?
0.8 kg of food.
400
Cheyenne's laptop weighs 2.39 pounds. Round this number to the nearest tenth.
2.4
400
Solve 3.62 x 4
14.48
400
9.83+2.004+7.5
19.334
400
Solve 1.79 x 3 using the box method (area model)
5.37
400
A squirrel in a forest gathers 0.75 kilograms of acorns each day.
If it gathers acorns for 6 days, how many kilograms of acorns does it collect in total?
4.5 kg of acorns in total.
500
Mrs. Rowe mixed 9.84g of glue, 19.051g of glitter, and 2.145g of activator to make slime. What is the weight of the slime in grams?
31.036 grams
500
Runners compete in a 100-meter race. The times are in the table below.
Which choice shows the finish times from fastest to slowest?
a. 35.79, 35.085, 34.9, 34.09
b. 35.085, 35.79, 34.09, 34.9
c. 34.09, 34.9, 35.085, 35.79
d. 35.79, 34.9, 35.085, 34.09
c. 34.09, 34.9, 35.085, 35.79
500
Use an area model to explain the product of 5.34 and 6 and calculate.
500
Compare using >,<,or, =. SHOW YOUR WORK
1.8+0.028+3.0 ___ 4.828
=
500
In a desert ecosystem, a water container for lizards holds 5.0 liters of water in the morning.
By the end of the day, only 3.65 liters are left due to drinking and evaporation.
Question:
How much water was used during the day?
5.00−3.65=1.35