When you are solving an addition calculation with a two-digit number, you need to think about tens and ones. A place value chart can help you to see the value of each digit in a number. For example, ...

NARRATOR: Yes, that is quite a hard sum. It might be easier if we separate the 17 into a 10 and a 7, and the 14 into a 10 and a 4. That gives us a 10, a 10, a 7 and a 4. Let's start by adding the ...

When you play Mega Millions, you need to choose six numbers from two separate pools for the drawing. Players choose five numbers between 1 and 70 for the white balls and one number for a gold ball ...