Semester Exam Day 1 Review Rational Numbers (Math 7H)

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is the sum of -43.7 and 9.06?

Back

-34.64

Front

What is the product of two negative numbers, such as -8.6 and -0.07?

Back

The product is positive, so (-8.6)(-0.07) = 0.602.

Front

Evaluate the expression: 8 + 5 - 3.

Back

10

Front

What is the result of dividing -3/4 by 1/2?

Back

-3/2

Front

How do you add fractions with different denominators, such as 3/4 and 2/5?

Back

Find a common denominator, which is 20. Then, convert: 3/4 = 15/20 and 2/5 = 8/20. Add them to get 23/20.

Front

What is the rule for multiplying two negative numbers?

Back

The product of two negative numbers is positive.

Front

What is the rule for dividing a negative number by a positive number?

Back

The result is negative.

Front

What is the first step in simplifying the expression 3/4 + 2/5?

Back

Find a common denominator.

Front

Back