MATH DOST QUIZ

Which of the following is NOT the sum of two prime numbers?

• 24

• 30

• 67

• 21

What do you call the number to which an addend is added?

What property says that for any numbers a and b, a +b = b + a?

One fifth of a number added to one-fourth of the same number is equal to 18. What is the number?

The number 5A2 is divisible by 6. Which is not a possible value of A?

• 2

• 5

• 8

• 3

What is the largest 2-digit prime numbers?

The diagonal of a square is 6cm. Find the area of the square that is twice its size.

One pair of opposite sides of a quadrilateral are parallel. The other pair is not parallel. What is the name of the quadrilateral?

What is one half of one fourth of 64?

The perimeter of a rectangle is 26 cm. Its width is 5 cm. What is its length?