Adding, subtracting and estimating with Scientific Notation

Adding, subtracting and estimating with Scientific Notation

Today's Goal

• I can add and subtract numbers given in scientific notation.

• Convert between decimal and scientific notation.

Multiple Choice

Give the difference of (9.87 x 10⁷) - (7.42 x 10⁷) in scientific notation

• 2.45 x 10⁰

• 3.5 x 10⁷

• 2.45 x 10⁷

• 17.29 x 10⁷

Multiple Choice

Give the difference of (6.4 x 10^-6) - (5.7 x 10^-7)

• 5.83 x 10^-6

• 7 x 10^-7

• 1.23 x 10^-13

• 1.3 x 10^-6

Multiple Choice

Give the sum of (2.6 x 10⁶) + (4.2 x 10⁶)

• 6.8 x 10⁶

• 6.8 x 10¹²

• 8.4 x 10⁶

• 3.2 x 10¹²

Multiple Choice

Give the sum of (4.8 x 10⁸) + (5.4 x 10⁸) in scientific notation

• 1.02 x 10⁸

• 1.02 x 10⁹

• 9.2 x 10⁸

• 2.1 x 10⁹

Multiple Choice

Give the sum of (8.7 x 10⁵) + (7.32 x 10⁷) in scientific notation

• 16.02 x 10⁷

• 7.407 x 10⁵

• 7.407 x 10⁷

• 1.602 x 10⁷

Multiple Choice

• A

• B

• C

• D

Multiple Choice

Which is the largest?

4.8 x 10^-6

1.3 x 10²⁰

3.1 x 10^-4

9.2 x 10^-5

9.5 x 10³²

5.9 x 10^-5

2.9 x 10²¹

8.4 x 10¹⁹

• 9.5 x 10³²

• 3.1 x 10^-4

• 8.4 x 10¹⁹

• 4.8 x 10^-6

Multiple Choice

Write the answer in scientific notation.

7.3 x 10⁵ + 3.7 x 10⁵ =

• 11.0 x 10⁵

• 1.1 x 10¹⁰

• 1.10 x 10¹¹

• 1.1 x 10 ⁶

Multiple Choice

When writing a number in scientific notation, the first number must be greater than 1, but less than 10.

• False
• True

Multiple Choice

Rewrite 635.2 x 10⁹ in scientific notation

• 63.52 x 10¹⁰

• 6.352 x 10¹¹

• 6352 x 10⁸

• 6.352 x 10⁷

Multiple Choice

The population of China is 1.3 x 10⁹ and the population of the world is 6.4 x 10⁹. What is the difference between the population of the entire world and the population of China?

• 7.7 x 10¹⁸

• 7.7 x 10⁹

• 5.1 x 10¹⁸

• 5.1 x 10⁹

Multiple Choice

Convert 56,000,000,000 from standard to scientific notation form.

• 5.6 x 10⁹

• 56 x 10^-9

• 56 x 10⁹

• 5.6 x 10¹⁰

Multiple Choice

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

Multiple Select

Add all the diameters of all the planets except the Sun. Which is wider, all of these objects side by side, or the Sun?

• The Sun

• All the planets