U4 Practice Test

Front

How do you write 8.317 x 10^6 in standard form?

Back

8,317,000

Front

A rational number is also a natural number. Is this statement always true, sometimes true, or never true?

Back

Sometimes true

Front

Compare 6.5 x 10^3 and 4.3 x 10^3. Which number is smaller?

Back

4.3 x 10^3

Front

Which number is the greatest? \( \frac{5}{4}, 1\frac{8}{25}, 1.3 \)

Back

1\frac{8}{25}

Front

Which of the following numbers is the largest? 3.2 x 10^2, 2.5 x 10^3, 4.1 x 10^1, 1.8 x 10^4

Back

1.8 x 10^4

Front

What is the definition of a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction \( \frac{a}{b} \) of two integers, where \( b \neq 0 \).

Front

What is standard form in mathematics?

Back

Standard form is a way of writing numbers using powers of ten, where a number is expressed as \( a \times 10^n \), with \( 1 \leq a < 10 \) and \( n \) being an integer.

Front

How do you convert a number from scientific notation to standard form?

Back

To convert from scientific notation to standard form, multiply the coefficient by 10 raised to the power indicated.

Front

What is the value of \( 2.5 \times 10^3 \) in standard form?

Back

2,500

Front

What is the value of \( 4.1 \times 10^1 \) in standard form?

Back

41