Place Value
Organize the Decimals
Estimating
Add and Subtract Decimals
Patterns and Picking a Method
100
What is 1/10 (one tenth) of 0.543? What is 10 times the amount of 0.543?
0.0543 is 1/10 of 0.543 and 5.430 is 10 times bigger than 0.543. (1/10 is division, making the answer smaller and 10 times is multiplication, making the answer bigger)
100
Matt bought gas for his lawnmower each day throughout the week Organize the days from least to greatest. Monday - $5.62, Tuesday - $4.98, Wednesday - $5.26, Thursday - $ 4.96, Friday - $ 5.44
Thursday, Tuesday, Wednesday, Friday, Monday
100
What is the difference between rounding and benchmarks?
In a number with decimals, rounding takes you to the nearest whole number. Benchmarks take you to the nearest quarter (.25, .50, .75, .00)
100
Add. 4.56 + 7.82 + 3.11 = ?
15.49
100
What is the pattern? 0.19 , 0.15 , 0.11 , 0.07
Subtract by 0.04
200
What is 0.378 in word form?
Three hundred seventy-eight thousandths
200
Organize the data from greatest to least. 7.82, 9.31, 4.56, 4.65, 8.72, 3.91
9.31, 8.72, 7.82, 4.65, 4.56, 3.91
200
Julia earned $76.14 on Saturday and $59.44 on Monday. Use benchmarks to estimate her total earnings. Show your work.
$76.14 +$59.44 = $135.58 --> $76.25 +$59.50 = $135.75 My answer is reasonable.
200
32.14 - 29.27 = ?
2.17
200
Find the missing number in the sequence. What is the pattern? 1.01, 1.71, ____, 3.11, 3.81
2.41. Add by 0.70
300
What number is in the thousandths position? 19.456
The six is in the thousandths position.
300
Julia has $18.27 in her piggy bank. Neaveh has $ 17.82 in her piggy bank. Lastly, Hasan has $18.72 in his piggy bank. Who has the most and you has the least?
Hasan has the most with $18.72 and Neaveh has the least wth $17.82.
300
Felicia bought a gallon of milk at the store for $3.68. If she pays with $20.00, estimate with benchmarks what she will get back in change.
$20.00 - $3.68 = $16.32 --> $20.00 - $3.75 =$16.25 She will get approximately $16.25 back in change.
300
Draw a quick picture. 2.43 + 4.66 = ?
7.09
300
Gabriella goes to the doughnut shop and sees that one doughnut costs $0.95. If she needs to buy 6 doughnuts, how much will it cost? 1 doughnut - $0.95 2 doughnuts - 3 doughnuts - 4 doughnuts - 5 doughnuts - 6 doughnuts -
1 doughnut - $0.95 2 doughnuts -$1.90 3 doughnuts -$2.85 4 doughnuts -$3.80 5 doughnuts -$4.75 6 doughnuts -$5.70 6 doughnuts will cost Gabriella $5.70.
400
Draw a quick picture of .711
Seven tenths, 1 hundredths, 1 thousandths
400
Marty is a gymnastic star. He competed in the National competition and he wrote down his scores. Floor - 8.42, Pummel Horse - 9.58, Still Rings - 9.12, Vault - 8.56, Parallel Bars - 8.11, High Bar - 9.21 What event does Marty need to work on? How do you know?
Marty should work on Parallel Bars. I know this because I organized the decimals from least to greatest. The lowest number was 8.11 (the number for Parallel Bars).
400
Margaret weighed two watermelons at the grocery store. One was 18.43 ounces and the other was 27.31 ounces. Estimate the total weight of the watermelons. Is your estimate lower and higher than the actual weight?
18.43 + 27.31 = 45.74 ounces --> 18 + 27 = 45 ounces My estimate is lower than the actual weight of the watermelons.
400
Draw a quick picture. 4.65 - 1.83 = ?
2.82
400
Terry and Louis are solving the following problem. Rosario's cat weighs 8.4 pounds and her dog weighs 42.71 pounds. What is the weight of both animals combined? Terry set up his problem 8.4 + 42.71 and Louis set up his problem 42.71 + 8.4. Who is right? Explain your answer.
Both are write. The answer is 51.11 pounds. They both used the Commutative Property of Addition. This means that the order of the addends can be in any order and you will still get the same sum.
500
What is 7.892 rounded to the nearest whole number, tenth, and hundredth?
7.892 rounded to the nearest whole number is 8. 7.892 rounded to the nearest tenth is 7.9. 7.892 rounded to the nearest hundredth is 7.89.
500
Michelle listed her test scores for each subject last week Social Studies - 72.45% Science - 82. 5% Math - 86.89% Writing - 69.54% Reading - 86. 56% Spelling - 92.41% Organize the subjects from the lowest score to the highest.
Writing, Social Studies, Science, Reading, Math, Spelling.
500
Miguel wants to make a sandwich. He goes to the store and buys bread which costs $2.34, peanut butter which is $3.99 and jelly which is $3.67. Estimate by rounding what he has to spend to make his sandwich. Is your estimate lower, the same, or higher than the actual number? Is your answer reasonable?
My estimate is $10. The actual cost of the food is $10. So, my estimate was the same as the actual number. My estimate is reasonable.
500
Mikalya had $456.72 in the bank in the beginning of April. She earned $123.28 at her job and deposited it into the bank. Mikalya knew she had enough money to pay her bills. She had a $76.82 cell phone bill, $59.11 electricity bill and $350 for rent. How much money does Mikalya have at the end the month?
$456.72 +$123.28 - $76.82 - $59.11 - $350.00 = $94.07
500
Martha does not know whether to use benchmarks or rounding in this problem. Theresa earned $45.72 on Monday for babysitting. She earned $45. 41 on Thursday for babysitting. How much did she make on both days? What would be a more reasonable method to use?
Benchmarks would be more reasonable. The original numbers are really close to the benchmarks and our estimate will be closer to the actual number. $45.72 + 45.51 = $91.23 --> $45.75 + $45.50 = $91.25