David was painting. He came over to see what Billy had done, carrying his paint brush.

"Oh dear!" wailed Billy, "Look at what you've done now!"

David's brush had dropped lots of splodges of paint on Billy's work.

Can you help them sort out the numbers?

Unfortunately Billy had not indicated whether he had done an addition, a subtraction or a multiplication so that needs sorting out too.

(Each blot covers just one figure.)