Antonio Edition Level 4 - Subtraction
The Level 4 book contains 40 questions per exercise and represents a significant increment on the concentration stamina demand the student faces. The Level 4 book is usually the last book a student attempts prior to graduating to the Tiger series.
The ANT prize requires a processing speed of 1.75 questions per second, slightly slower than the addition to account for the added relative complexity of subtraction to Addition, and the increasing load on the concentration.
This book would usually be used for children of 8 or 9 who are building their concentration stamina and hand speed.
- 40 Questions Per Exercise
- 4 different answer styles
- x2 Performance Graphs
- x32 30mm stickers
- x40 10mm stickers