Revising 2 & 5 times tables game - https://www.topmarks.co.uk/maths-games/hit-the-button
Adding multiples of 10 - http://www.snappymaths.com/addition/ addm10to2d/interactive/addm10to2dattack.htm
4 Times tables song -https://www.youtube.com/watch?v=8QU_E0u-tP4
Rocket Rounding & BBC Bitesize rounding - https://www.topmarks.co.uk/maths-games/rocket-rounding