DS1 is a times table enthusiast. His school drills and tests them first on the standard times tables 1-10, then on tables in reverse i.e. division. Then they have to be able to use decimals and multiples of 10, eventually being tested on all of these things in one giant time-trialled test. I think this is truly excellent but he really needs help to get quicker on the decimals etc.
There are loads of times table testing apps for the simple tables, but does anyone know of one that will do decimals and/or multiples of 10 eg 0.7 x 5 Or 50 x 30