100 MENTAL MATHS STARTERS is a series of six flexible teacher's handbooks designed to provide content for the mental and oral lesson-starter sessions (first 10 minutes) of 100 dedicated maths lessons ('numeracy hours'). Each year-specific book is based on the planning and content of the corresponding '100 Maths Lessons' book, and provide in full 100 of the starter activities only outlined in that series. *All the questions, answers and essential information a teacher needs to deliver 100 10-minute starter sessions. *Systematic development of mental maths skills according to NNS objectives year-by-year. *Follows planning and activity outlines in '100 Maths Lessons and more'. *Flexible photocopiable format for delivery by teacher or for children working together. *Essential resources provided as photocopiable pages.