Rational Numbers and Fractions

The video tutorial covers the basics of rational numbers, including whole numbers, fractions, and decimals. It provides examples of adding and subtracting fractions, calculating money, and determining time differences in a race. The tutorial also includes a practical example of calculating distances using fractions.

What is a rational number?

• A number that cannot be expressed as a fraction

• A number that can be expressed as a fraction

• A number that is always an integer

• A number that is always a decimal

Which of the following is a rational number?

• √2

• π

• 0.75

• e

When adding decimals, what must you remember to do?

• Line up the numerators

• Line up the denominators

• Line up the decimal points

• Line up the whole numbers

What is the common denominator for 1/2 and 3/8?

• 10

• 8

• 6

• 4

How do you simplify 11/8?

• 1 and 2/8

• 1 and 1/8

• 1 and 3/8

• 1 and 4/8

What is the result of 5 quarters in dollars?

• $1.25

• $1.00

• $1.50

• $1.75

If you have $2 and spend $0.70, how much is left?

• $1.50

• $1.40

• $1.30

• $1.20

How much faster was the gray rocket compared to the purple rocket?

• 7.5 seconds

• 8.0 seconds

• 8.5 seconds

• 9.0 seconds

What is 42.3 minus 8.5?

• 34.8

• 36.8

• 33.8

• 35.8

What is the decimal equivalent of 5/10?

• 0.7

• 0.5

• 0.6

• 0.4