Write the numbers in a vertical list, lining up the decimal points. If the numbers have a different amount of digits, there may be some gaps in the columns. Fill in any gaps with a zero so that each ...

Hello, I'm Mr Firth, and I need your help today as we learn to add and subtract within ten. You can use lots of things to help you add and subtract. Counters, number lines and even your fingers. Let's ...

Represent teen numbers with addition and subtraction equations involving one 10. Represent 10 using a number bond and 10-frame with a missing addend. Use Notice and Wonder with a 10-frame, connecting ...

When you add or subtract currency-formatted numbers, Excel 2013 automatically adopts the currency format for the results. Adding and subtracting figures follows similar procedures, but you must be ...

Addition & subtraction with regrouping using different strategies to solve. In this lesson, students go over addition and subtraction with regrouping using different strategies to solve. Today we ...

Addition and Subtraction Tricks Without Pen and Paper: Doing quick calculations without writing anything down can seem tricky, but with the right mental math techniques, students can easily learn to ...