Make 10, Make 11 & Make 12
These Make 10, 11 & 12 mental arithmetic puzzle books are cram packed full of hundreds of interesting and fun number puzzle grids.
How it works
Study the grid of numbers on each Make 10, 11 or 12 page. Find all the pairs and triplets of numbers in a straight line that add up to the target numner.
Use the checklist at the bottom of each page. Keep going until you’ve found every pair and triplet.
Each book comes full of dozens of Make 10, Make 11 or Make 10 puzzle grids as well as a host of other fun puzzles and games for hours of fun.