Math Bowl (4th Grade)

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. It has exactly two distinct positive divisors: 1 and itself.

Front

Is 52 a prime number?

Back

No, 52 is not a prime number because it has divisors other than 1 and itself (e.g., 2, 4, 13, 26).

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors.

Front

Is 100 a composite number?

Back

Yes, 100 is a composite number because it has divisors other than 1 and itself (e.g., 2, 4, 5, 10, 20, 25, 50).

Front

How do you find the difference between two numbers?

Back

To find the difference between two numbers, subtract the smaller number from the larger number.

Front

What is the difference between 31,678 and 28,895?

Back

The difference is 2,783.

Front

What does it mean to multiply a number?

Back

Multiplying a number means to increase it by a certain factor, which is the number of times you add that number to itself.

Front

If Emma has 14 daisies and Bella has 3 times as many, how many daisies does Bella have?

Back

Bella has 42 daisies.

Front

What is the rule for multiplying by 2?

Back

The rule for multiplying by 2 is to double the number.

Front

If you start at 7 and multiply by 2, what is the 5th number in the sequence?

Back

The 5th number is 112.