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, ...

Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS using one of the services below. You've just tried to add this ...

Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines, place value charts and place value counters.

(dramatic orchestral music) (air swooshes) (magic chimes) (Springling boinging) (Dotsan screaming) - [Kids] Math Mights. - Welcome Math Mights, Mrs. Markovich here, and we've got a whole lot of fun ...

I feel a little weird writing yet another Audi-and-numbers story in just one day, but sometimes fate has some funny ideas. Today Audi informed the world that it is changing its vehicle nomenclature ...

Quick: What's 19 2...without your calculator? (361.) Squaring complex, two-digit numbers in your head isn't that difficult if you know a simple trick, according to the Secrets of Mental Math author ...

Answer: 888 + 88 + 8 + 8 + 8 = 1,000. This is the kind of math riddle you can work out with times tables, or by simple logic. First, get as close to 1,000 as you can (888). From there, it’s easy to ...