Place Value of Decimals
Rounding Decimals
I can read, write, and compare decimals to the thousandths place.
Problem Solving
Patterns and MORE problem solving!
100
The fastest person to do 20 jumping jacks on a team of students finished in 9.295 seconds. What is the value of 2 in the number above? (use the place value word!)
2 tenths
100
What is 3.457 rounded to the nearest WHOLE number?
3
100
Allison tied her shoelaces in 3.5 seconds and John tied his in 3.45 seconds. Who tied their shoes the fastest?
John.
100
Two teams sang "Happy Birthday" in 10.34 seconds and 11.29 seconds. About how long did it take both teams to sing? a. 20 seconds b. 21. 63 seconds c. 10 seconds d. 30 seconds
a. 20 seconds - rounding to nearest tens place.
100
What is the rule to this sequence? 3.5, 3.75, 4.0, 4.25
Add .25 each time.
200
The average snowfall in December for Sharonville, OH is 10.20 cm. Write this amount of snowfall in WORD FORM.
ten and twenty hundredths cm OR ten and two tenths cm
200
What is a reasonable estimate for the number 1.74... using the nearest whole number? using a BENCHMARK decimal?
Whole number- 2 Benchmark decimal- 1.75
200
Sharonville received an average snowfall of 17.80 cm in January, 10.20 cm in December, and 12.70 cm in February. Which month receives the most snowfall on average?
January.
200
You want to know about how much money you will have left after buying lunch today. You have $10.75 in your pocket. You buy a $5 foot-long sub from Subway and a cookie for $0.99. What is a REASONABLE ESTIMATE for how much you have left?
Need to show evidence of using rounding to either whole numbers, benchmarks or a place value before adding and subtracting.
200
Bob and Joe are playing a number game. Bob wrote the following sequence. 28.9, 26.8, 24.7, ____, 20.5 What is the unknown number in the sequence?
22.6
300
I understand that each place value is _____ times larger than the place to the right, and ______ as large as the place to the left.
10, 1/10
300
Pittsburg Pirate Andrew McCutchen had a batting average in the 2013 season on .333. What is this number rounded to the nearest hundredth?
A batting average of .33
300
The Pirate's total batting average was .238, the Tiger's was .245, and the Red's was .188. Put these three team's batting averages in order from least to greatest.
.188, .238, .245 Reds, Pirates, Tigers
300
In 2006 the US made 1.16 billion dollars selling Christmas trees. In 2007 they made 1.29 billion dollars. What was the total amount of money the US made on these sales in 2006 and 2007?
2.45 billion dollars
300
Each waffle cone at UDF costs $1.75 cents. How much would 5 waffle cones cost? Make a table to show your thinking.
What is $8.75.
400
What is 1/10 of the number 2.34? What is 10 times 2.34?
.234, 23.4
400
It takes the dwarf planet Pluto 247.68 years to circle the sun. What is 247.68 years rounded to the - nearest whole number? - nearest tenth? - nearest benchmark decimal?
-248 years -247.7 years -247.75 years
400
Write three decimal numbers in order from greatest to least.
Answers will vary.
400
You are shopping for presents for your family. You paid with a $20 bill and spent $15.27 on the presents. You received $3.20 in change. What did sales tax cost you?
$1.53 in tax.
400
Miguel has $20. He spends $7.95 on a movie ticket. $3.95 for snacks, and $1.75 for bus fare EACH way (there and home). How much money will he have left?
$5.30
500
Last night I made 2.25 batches of cookies. What is the value of 5 in this number? If I make 1/10 as many cookies tonight... how many batches will I make?
five hundredths .225 batches
500
Explain how you use place value to round a decimal number to the nearest whole number or to the nearest benchmark decimal.
Answers will vary.
500
Below is the total money made selling Christmas Trees (in billions of dollars) in the US: 2006: $1.16 2007: $1.29 2008: $1.03 Write these values in order from greatest to least
2007, 2006, 2008
500
My parents and I went to PF Chang's last weekend. My dad and I both got had a bowl of wonton soup. My mom had a Thai Beef and Noodle Salad. If my dad paid with $30 would he have enough money? How much change would he get? (Don't worry about tax!)
Yes. $3.15 change.
500
At the end of December, Mr. Diamond had a balance of $367.38 in his checking account. He wrote two checks to buy holiday presents, one for $136.94 and the other for $14.75. He then got $185.00 from his grandma that he deposited into the bank. How much is in his checking account now?
$400.69
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