Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder. For example, factors of 20 are 1, 2, 4, 5, 10, and 20.

Front

Which of these numbers is NOT a factor of 20? 20, 1, 6, 4

Back

6 is NOT a factor of 20.

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor, which is the largest number that divides two or more numbers.

Front

What is the GCF of 24 and 42?

Back

The GCF of 24 and 42 is 6.

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

Front

Which of these numbers is PRIME? 9, 15, 34, 2

Back

2 is a prime number.

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. For example, 50% means 50 out of 100.

Front

Which of these values is the GREATEST? 55%, 1/2, | -1 |, 0

Back

| -1 | (which equals 1) is the greatest value.

Front

What is the formula to calculate change?

Back

Change = Amount Paid - Cost of Item.

Front

Leo spent $31.40 on a new jacket. He paid using two twenty dollar bills. How much change did he receive?

Back

Leo received $8.60 in change.