Math 7: Review #2

Front

What is standard form in mathematics?

Back

Standard form is a way of writing numbers that are too big or too small to be conveniently written in decimal form. It is expressed as a number between 1 and 10 multiplied by a power of 10.

Front

Convert 5.732 x 10^8 to standard form.

Back

573,200,000

Front

What does the absolute value of a number represent?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. It is always a non-negative value.

Front

Calculate |-10| + (45 ÷ 9) ÷ 5.

Back

11

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS is used: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the value of 45 ÷ 9?

Back

5

Front

What is the result of 5 ÷ 5?

Back

1

Front

What is the definition of a power of ten?

Back

A power of ten is a number expressed as 10 raised to an exponent, indicating how many times to multiply 10 by itself.

Front

Convert 0.00000005732 to standard form.

Back

5.732 x 10^-8

Front

What is the result of adding two absolute values, such as |-10| + |5|?

Back

The result is the sum of the two non-negative values, which is 15.