Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference. Aired 12/07/2021 | Rating ...

Subtraction by counting back Take a look at this number line. It shows 14 - 5 = 9. You can count backwards down the number line to subtract.

Mrs. McCartney talks addition with D.C.; practices hopping the numberline with Springling.

Video – Adding and subtracting with negative numbers Watch the video to learn about adding and subtracting with negative numbers on a number line and by using number discs.