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«Mathematics 2 class 1 part» — — is a workbook that helps to learn how to add and subtract two-digit numbers, decompose numbers in different ways, solve alphabetic expressions, and understand how to use the rounding method. More than 30 training sessions and 106 colourful activities for working with numbers. To make the lessons interesting, mark each completed task with a bird sticker to make them more effective - write down the date you complete the task and how long it took you to complete it.