Adding Tens

Adding Tens: Learn

How to add two-digit numbers (for example 40 + 50).
  • Place one number above the other so the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
    4 0
    + 5 0
  • Add the two ones' place digits. (0 + 0 = 0). Place the zero below the line in the ones' place column.
    4 0
    + 5 0
    0
  • Add the numbers in the tens' place column (4 + 5 = 9) and place the answer below the line and to the left of the ones' place sum.
    4 0
    + 5 0
    9 0

Adding Tens: Practice

What is the Sum of the two Numbers?

00:00

+ =

Press the Start Button To Begin

You have 0 correct and 0 incorrect.

This is 0 percent correct.

Play

Game Name Description Best Score
How many correct answers can you get in 60 seconds? 0
Extra time is awarded for each correct answer.
Play longer by getting more correct.
0
How fast can you get 20 more correct answers than wrong answers? 999

Explore