Unit 1
The area of Mammoth Cave National Park in Kentucky is about fifty-two thousand, eight hundred thirty and nineteen hundredths acres. What is this number in standard form
52,830.19
Two rocks samples have masses of 56.24 grams and 8.98 grams. Which of the following is the best estimate of the total mass of the rock samples?
65 grams
600 x 30
18,000 tickets
Nicole buys envelopes for her home office that come in boxes of 125 envelopes. If she buys 18 boxes, how many envelopes will she have in all?
2,250 envelopes in all
A musical is playing at a theater that has 628 seats. Which is the best estimate of the total number of tickets available for 33 shows.
600 x 30= 18,000
North High School has 5,000 students. South High school has 1/10 as many students as North High school. How many students are there at South High School?
500
Find the sum of $4.28, $21.35 and $14.65
$40.28
A furniture manufacturer shipped 26 cartons to a store. Each carton weighted 235 pounds. What is the total weight of the cartons?
6,110 pounds
Ms. Gomez flies 976 miles round trip to visit her parents. What is the total distance, that she would fly for 12 visits to her parent's house?
10,512
Concert arena has 425 seats. What is the best estimate of the total number of tickets available for 28 concerts?
400 x 30 = 12,000
Maria walked 4.035 kilometers. What is 4.035 written in expanded form?
( 4 x 1 ) + ( 3/100) + ( 5 x 1/1000 )
Sophie put two bookshelves in her room. The top shelf is 3.88 feet long and the bottom shelf is 4.56 feet long. What is the combined lengths of the two bookshelves?
8.44 feet
Complete the pattern, then explain the relationship
300, 30, 3, 0.3, ____, _____
0.03, 0.003
You divide by 10 each time
Trevor had 228 books on shelf. Eli has 14 times as many books as Trevor. How many boos does Eli have?
3,192
A stadium section has 1,185 seats. What is the best estimate of the total number of tickets available for 19 games?
1,200 x 20= 24,000
Kent completed his homework in 52.752 minutes. What is this number rounded to the nearest tenth?
52.8
Sophie put two bookshelves in her room. The top shelf is 3.88 feet long and the bottom shelf is 4.56 feet long.How much longer is the bottom shelf than the top shelf?
0.68 feet
During the Hockey season, Elena averaged 5.625 assist per game. What is 5.625 written in expanded form? How is it written in number names?
( 5 x 1 ) + ( 6 x 1/10) + ( 2 x 1/100) + ( 5 x 1/1000)
five and six hundred twenty-five thousandths
A rectangle yoga studio is 25.15 feet long and 13.62 feed wide. Round the length and width to the nearest whole number. Then estimate the perimeter of the yoga studio.
25 + 25 + 14 + 14 = 78
Mr. Levy has a budget of 18,000. Uniforms for the marching band cost $315 each, and he needs 62 uniforms. He says, " since 60 x $300 = $18,000, I can stay within the budget." Do you agree? Explain.
No, I do not agree. Mr. Ley's estimate was too low because he rounded down both numbers. The real cost is $19,530 so he will go over budget.
Eddy's plum weighs 3.042 ounces. Desta's plum weighs 3.24 ounces. Whose plum weighs more? How much more?
0.198 more
Mr. Lee sold 8.6 of apples and Ms.Perry sold 40.4 pounds of apples at the farmer's market. How many more pounds of apples did Ms.Perry sell than Mr. Lee?
31.8 pounds
Ricardo drove 15.6 miles on Monday and 9.78 miles on Tuesday. What is the total distance he drove on the two days?
25.38
A rectangle yoga studio is 25.15 feet long and 13.62 feet wide. Round the length and width to the nearest tenth. Then estimate the perimeter of the yoga studio.
13.6 + 13.6 + 25.2 + 25.2= 77.6
A bakery plans to make 125 cakes for a festival. Each cake costs $18 to make. The bakery has $2,000 for supplies. The baker says,
“Since 100 × $20 = $2,000, we’re fine.”
Do you agree? Explain.
No, I do not agree.
The actual cost of $2,250 exceeds the $2,000 budget, so the baker cannot stay within the budget. The estimation was too low.