Math 7 - 4th Quarter Semi-Final Test

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, typically in the format a × 10^n, where 1 ≤ a < 10 and n is an integer.

Front

Which item is best represented by a number in scientific notation?

Back

The number of seconds in a decade.

Front

If Rob's age is 3 more than twice Sara's age and Rob is 15 years old, how old is Sara?

Back

Sara is 6 years old.

Front

What is the numerical coefficient of -2x?

Back

-2.

Front

Which operation is NOT written in scientific notation?

Back

85.6 x 10^3.

Front

What does the term 'numerical coefficient' mean?

Back

The numerical factor in a term that contains a variable, for example, in -2x, -2 is the numerical coefficient.

Front

How do you convert a number into scientific notation?

Back

Move the decimal point in the number until only one non-zero digit remains to the left of the decimal, then multiply by 10 raised to the number of places the decimal was moved.

Front

What is the purpose of using scientific notation?

Back

To simplify the representation of very large or very small numbers for easier calculation and comparison.

Front

What is the value of 8.56 x 10^4 in standard form?

Back

85600.

Front

If E is the event that all responses are the same, how many favorable responses are there?

Back

2.