Week 2 Bell-ringers - 8th Grade LPSS - Scientific Notation

by Ellie Keefe

| 6 QuestionsNO CALCULATOR

1

1

How many times greater is the following? Give the answer in proper scientific notation.

5 x 10^3

5 x 10^2

0.5 x 10^3

2 x 10^3

2

1

The body of a 154-pound person contains approximately 2 x 10^-1 milligrams of gold and 6 x 10^1 milligrams of aluminum. Based on this information, the number of milligrams of aluminum in the body is how many times the number of milligrams of gold in the body?

3

1

The area of Canada is approximately 1 x 10^7 square miles.

The area of Italy is approximately 3 x 10^5 square miles.

Which statement best describes the relative sizes of the countries?

The area of Italy is approximately 3 times the size of Canada.

The area of Canada is a little more than 30 times the size of Italy.

The area of Italy is a little more than 2 times the size of Canada.

The area of Canada is approximately 100 times the size of Italy.

4

1

The Earth is approximately 9.3 x 10^7 miles from the sun. Uranus is approximately 1.8 x 10^9 miles from the sun. About how many times farther from the sun is Uranus than Earth?

1.9 x 10^1 times farther

5 x 10^2 times farther

2 times farther

1.6 x 10^2 times farther

QUIZ

5

2

The body of a 154 pound person contains approximately 4 × 10^-1 milligrams of gold and 16 × 10^1 milligrams of aluminum. Based on this information, the number of milligrams of aluminum in the body is how many times the number of milligrams of gold in the body?

6

2

The diameter of the sun is approximately 1.39 x 10^6 km. The diameter of Mercury is approximately 4.88 x 10^3 km. About how many times larger is the diameter of the sun that the diameter of Mercury?

2.8 x 10^4 times larger

2.8 x 10^2 times larger

.28 x 103 times larger

3 x 10^3 times larger

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