AnswersTN-Mathematical Reasoning for Decision Making SupplementAddition and Subtraction with Scientific Notation

Addition and Subtraction with Scientific Notation — Unit test Answers

14 verified answers1 views
1
Free Preview

Karl rides his bicycle 120 feet in 10 seconds. How many feet does he ride in 1 minute?

A
2 feet
B
12 feet
C
720 feet
D
7,200 feet
2
Free Preview

As the planets revolve around the Sun, sometimes Earth is between the Sun and Mars (Point A) and sometimes the Sun is between Earth and Mars (Point B). The distance from the Sun to Mars is approximately km, and the distance from the Sun to Earth is approximately km. Which statements are true? Check all that apply.

Question illustration
A
When they are on the same side of the Sun, the distance between Mars and Earth is approximately kilometers.
Option A
B
When they are on the same side of the Sun, the distance between Mars and Earth is approximately kilometers.
Option B
C
When they are on the same side of the Sun, the distance between Mars and Earth is approximately kilometers.
Option C
D
When they are on opposites sides of the Sun, the distance between Mars and Earth is approximately kilometers.
Option D
E
When they are on opposites sides of the Sun, the distance between Mars and Earth is approximately kilometers.
Option E
3

Maggie is converting 10,560 feet to miles by using . What should be Maggie’s answer?

Question illustration
A
Her answer should be mile because there are 5,280 feet in a mile.
Option A
B
Her answer should be mile because there are 10,560 feet in a mile.
Option B
C
Her answer should be 2 miles because there are 5,280 feet in a mile.
D
Her answer should be 2 miles because there are 10,560 feet in a mile.
4

Penelope drove 27 kilometers. Which expression finds the distance she drove in centimeters? Use the metric table to help answer the question.Metric Tablekilo-hecto-deka-unitdeci-centi-milli-1,0001001010.10.010.001

A
StartFraction 27 times 1,000,000 EndFraction
Option A
B
27 divided by 100,000
Option B
C
27 divided by 1,000,000
Option C
D
StartFraction 27 times 100,000 EndFraction
Option D
5

Enrique is measuring the mass of a flower petal. Which unit of measurement should he use to eliminate the need to write the value in scientific notation?

A
grams
B
centimeters
C
liters
D
kilograms
6

How many kilograms are in 76.2 grams? Use the metric table to help answer the question.Metric Tablekilo-hecto-deka-unitdeci-centi-milli-1,0001001010.10.010.001

A
0.000762 kilograms
B
0.00762 kilograms
C
0.0762 kilograms
D
0.762 kilograms
7

Alexi divided 256 by 16. Which could he have been converting?

A
256 ounces to pounds
B
256 pounds to ounces
C
256 pounds to tons
D
256 tons to pounds
9

When converting measures, which is a true statement?

A
If you are converting to a smaller unit, you should subtract.
B
If you are converting to a smaller unit, you should multiply.
C
If you are converting to a larger unit, you should add.
D
If you are converting to a larger unit, you should multiply.
10

Which number is equal to ?

Question illustration
A
40
B
1,000
C
10,000
D
40,000
11

Rick is taking a 1-mile ride on his bicycle. For each rotation of his tire, he travels 72 inches. How many rotations will his tire make during the 1-mile trip?

A
73 rotations
B
83 rotations
C
780 rotations
D
880 rotations
12

Jed needs to estimate the value of . Which statements should he consider? Check all that apply.

Question illustration
A
is approximately 2.
Option A
B
is approximately 0.5.
Option B
C
The answer will be very small because .
Option C
D
The number will be large because .
Option D
E
He will need to rewrite the preliminary result in scientific notation.
F
The number will be small because the exponent will be a fraction.
13

One teaspoon equals 0.5 centiliters. How many liters equal 50 teaspoons? Round the answer to the nearest hundredth.

A
0.25 liters
B
0.50 liters
C
25 liters
D
50 liters
14

Estimate the following product in scientific notation, and then select the best answer for the product’s power of 10.

Question illustration
A
2.7
B
14
C
15
D
27
15

Brad measured the length of an object as cm. Which items might he have measured? Check all that apply.

Question illustration
A
length of a city block
B
length of a city park
C
height of a person
D
distance across a city
E
height of an apple tree
F
width of a screen in a theater
G
depth of water in a swimming pool

Did you find these answers helpful?

More from this Course

Quiz
15 verified answers

Unit Test

Quiz
2 verified answers

Unit Test

Assignment
11 verified answers

Precision in Measurement