You can find the difference between two numbers in more than one way. You can count up from the smaller number to the larger number. Or, you can count back from the larger number to the smaller number ...

Mrs. McCartney talks addition with D.C.; practices hopping the numberline with Springling. Join Mrs. McCartney for an addition number talk with D.C.! Get your hopping skills ready so you can see our ...

You can add or subtract numbers in lots of different ways. You can use number lines, number bonds, fact families, 10 squares and counters, or even just writing the numbers down. Sometimes it is faster ...