Here is a great game for year 4 to play. It mirrors the Multiplication Tables Check which will soon be given to children in Year 4. Children are tested on their tables knowledge up to 12 x12 and are given a random set of 25 questions to answer. Children only have 6 seconds to answer each question. Give it a go!
https://mathsframe.co.uk/en/resources/resource/477/Multiplication-Tables-Check