If you would like to asses your pupils' fluency skills when adding or subtracting 10 or 100, then look no further! This Year 3 10 or 100 More or Less Fluency Matrix is the resource for you! There are 3 sets of questions, and each one has been differentiated 3 ways, meaning you can pitch this activity perfectly to each individual child. Children will add and subtract 10 or 100 using place value charts, Base 10 and arrow cards. The resource is ideal for displaying on the board to save on printing costs too. Give it a go!