Imagine an array as a row of numbers. Any number greater than 0 is a positive number.

Imagine an array as a row of numbers. An even number is a whole number that can be divided by 2 without a remainder.

Imagine an array as a row of numbers, in this case from 1 to 10. All you need to do, is to add them all together.

Factor is a number that divides another number evenly, with no remainder. For example, 3 and 6 are factors of 12 because 12 ÷ 3 = 4 exactly and 12 ÷ 6 = 2 exactly. The other factors of 12 are 1, 2, 4, and 12.

List all the factors of 15 and 25. Find the biggest number that appears in both lists. That number is the greatest common factor.

List all the factors of 24 and 36. Find the biggest number that appears in both lists. That number is the greatest common factor.

List all the factors of 400, 600, and 800. Find the biggest number that appears in both lists. That number is the greatest common factor.

List all the factors of 50, 75, and 100. Find the biggest number that appears in both lists. That number is the greatest common factor.

Find a common factor of 30, 21, and 48. Use it to find out how many party bags you could make.

Split the sweets equally between the bags and you will end up with a few extra items.

Split the bouncy balls equally between the bags and should not end up with any extra items.

Split the stickers equally between the bags and you will end up with a few extra items.