Teachers, save “Subtraction using Chunking: six-digit” to assign it to your class.

Answer the following number sentences using one of the chunking strategies. E.g. 57-24 50-20=30 7-4=3 30+3=33 Or 57-24 57-20=37 37-4=33 Tap on the and then select the so you can draw and explain your understanding as you go through the steps.