A number line is a useful tool you can use when adding and subtracting. You can print one off below, create your own, or use the numbers on a ruler.
A 100 chart is a useful tool you can use when adding and subtracting. You can print one off below or create your own.
Watch this Video to learn how to decompose numbers to answer two digit addition questions.
Watch this Video to learn how to decompose numbers to answer two digit addition questions.