Five Steps to a Five. Oral Calculation Trainer. Subtraction within 20 with a Transition through the Decade

"Five Steps to a Five" is a new type of trainer aimed at training students in mastering the addition-subtraction table of numbers. This workbook presents examples with transitions through the decade.
To facilitate the training process, we have separated the actions:... subtraction is given separately, and addition separately.
To avoid tiring the child with monotonous counting, we have inserted game pages after paired similar pages.
This workbook provides an opportunity to assess the correctness of the calculation: color the clown's face. There are tasks for finding unknown numbers, comparing expressions, as well as composing numerical expressions.
The last, fifth task on the page focuses on speed, so it can be used with a stopwatch.
The central control pages can be torn out in advance and used at the knowledge control stage after completing the entire workbook.
"Five Steps to a Five" is targeted at a wide range of students from different schools, working on various teaching materials.