Indices Flashcards

1
Q

When multiplying terms with the same base with powers, what do you do?

A

Add the powers together.

3^2 x 3^3 = 3^5

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2
Q

When dividing terms with the same base with powers, what do you do?

A

Subtract the powers.

27^5 ÷ 27^3 = 27^2

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3
Q

When raising a term with a power to another power, what do you do?

A

Multiply the powers.

(4^3)^2 = 4^3x2 = 4^6

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4
Q

When raising a product of terms to a power, what do you do?

A

Raise each term to that power.

(3z)^4 = 3^4 z^4 = 81z^4

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5
Q

When raising a quotient of terms to a power, what do you do?

A

Raise each term to that power.

(4/7)^2 = 4^2/7^2 = 16/49

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6
Q

When a number is raised to the power of zero, what happens?

A

Every number raised to the power of zero is equal to 1.

7^0 = 1

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7
Q

When a number is raised to a negative power, what happens?

A

A fraction is made with a numerator of 1.

3^-3 = 1/3^-3 = 1/27

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8
Q

When a problem is raised to the the power of -1, what happens?

A

The problems reciprocal is given.

(2/3)^-1 = 3/2

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9
Q

When a number is raised to the power of -n, what hapens.

A

It’s reciprocal is given.

(3/4)^-n = (4/3)^n = 4^n/3^n

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10
Q

Solve (8^4)^3

A

(8^4)^3 = 4^3x4 =4^12

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11
Q

Solve 9^0

A

9^0 = 1

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12
Q

Solve 2^5 x 2^3

A

2^5 x 2^3 = 2^5x3 = 2^15

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13
Q

Solve 14^12 ÷ 14^3

A

14^12 ÷ 14^3 = 14^12-3 = 14^9

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14
Q

Solve (2/6)^h

A

(2/6)^h = (6/2)^h = 6^h/2^h

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15
Q

Solve (2/15)^2

A

(2/15)^2 = 2^2/15^2 = 4/225

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16
Q

What is a significant figure?

A

A significant figure is the first non-zero digit in a number.

17
Q

What do significant figures do?

A

Significant figures are a way of including the most relevant digits in a number.

18
Q

How many significant figures are in 6557.0890?

A

7 significant figures (the zero is used as a placeholder for the other numbers).

19
Q

How many significant figures are in 8.20

A

2 significant figures (8 and 2).

20
Q

How many significant figures are in 108.225060

A

8 significant figures (the zero is used as a placeholder for the other numbers).

21
Q

How many significant figures are in 557809.08892

A

11 significant figures (the zero is used as a placeholder for the other numbers).

22
Q

Explain scientific notation.

A

Numbers are expressed in the equation:
m x 10^n
m is a number between 1 and 10.
n is an integer.

23
Q

Write 900 in scientific notation.

A

9 x 10^2.

24
Q

Write 1200 in scientific notation.

A

1.2 x 10^3.

25
Q

Write 10,000 in scientific notation.

A

10 x 10^3.

26
Q

Write 4,900,000 in scientific notation.

A

4.9 x 10^6.

27
Q

Write 9,800,000,000 in scientific notation.

A

9.8 x 10^9.