8th grade milestones review 2.4
Authored by Nancy Tanner
Mathematics
8th Grade
CCSS covered
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A carpenter bought 750 nails. Each nail has a mass of 5.2 x 10^-3 kilogram. What is the total mass, in kilograms, of the nails the carpenter bought? Give your answer as a decimal.
3.9
0.39
3.90
0.039
Tags
CCSS.8.EE.A.4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Peter determined the area, in square miles, of a piece of land using his calculator. The result of his calculation is displayed on his calculator in scientific notation as 7.4e-4. Which statement is true of the area of the piece of land?
It is between 0.07 and 0.7 square mile.
It is between 0.007 and 0.07 square mile.
It is between 0.0007 and 0.007 square mile.
It is between 0.00007 and 0.0007 square mile.
Tags
CCSS.8.EE.A.3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A light year is defined as the distance light travels in one year. One light year is 9.46 x 10^12 kilometers. A galaxy is about 150,000 light years wide. About how many kilometers wide is the galaxy?
1.419 x 10^16
1.419 x 10^17
1.419 x 10^18
1.419 x 10^19
Tags
CCSS.8.EE.A.4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the value of the expression below? (4.8 x 10^3) / (1.2 x 10^4) x (2.2 x 10^-6)
0.88
0.088
0.0088
0.00088
Tags
CCSS.8.EE.A.4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mass of a dust particle is approximately 7.5 x 10^-10 kilograms and the mass of an electron is 9.1 x 10^-31 kilograms. Approximately how many electrons have the same mass as one dust particle?
1.21 x 10^20
1.21 x 10^21
8.24 x 10^20
8.24 x 10^21
Tags
CCSS.8.EE.A.4
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following equations are true? Select all that apply.
B, C
A, C, E
B, D, E
C, D, E
Tags
CCSS.8.EE.A.4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which expression is equivalent to (4.5 x 10^2) + (6.0 x 10^3) and written in scientific notation?
1.05 x 10^6
2.7 x 10^6
6.45 x 10^3
10.5 x 10^1
Tags
CCSS.8.EE.A.4
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