Math 5

Front

What is the least common multiple (LCM) of 20 and 50?

Back

The least common multiple (LCM) of 20 and 50 is 100.

Front

How do you determine if a number is divisible by 4?

Back

A number is divisible by 4 if the last two digits form a number that is divisible by 4.

Front

What is the rule for a number to be divisible by 3?

Back

A number is divisible by 3 if the sum of its digits is divisible by 3.

Front

Back

Front

How do you subtract fractions with different denominators?

Back

Find a common denominator, convert the fractions, then subtract the numerators.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What is a mixed number? Give an example.

Back

Front

What is the process to convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place over the original denominator.

Front

What is the greatest common factor (GCF) of 12 and 16?

Back

The greatest common factor (GCF) of 12 and 16 is 4.

Front

How do you find the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).