Problem solving is less about math calculation and more about how to apply that math knowledge.
The ALCUMUS system (along with several of the Art of Problem solving textbooks) helped my eldest learn 3 years worth of problem-solving math in 6 months. I highly recommend that you use it to teach your daughter math problem-solving .
ALCUMUS is a bank of 13,000 problem solving questions made available for free by The Art of Problem Solving. Many of the problems start at a Pre-Algebra level, appropriate for accelerated 10-year-olds.
Parents create an account then students log on and work by themselves. There is a page for parents that allows you to see your daughter’s progress.