50以内加减法（竖式）幼小衔接数学练习册进位退位混合运算口算题卡天天练幼儿园大班升一年级幼升小思维训练算数算术本学前班教育正版 - Tapa blanda

Essential pre-school population mental arithmetic: addition and subtraction within 50(Chinese Edition)

paperback. Condición: New. Paperback. Pub Date :2013-12-01 Pages: 100 Language: Chinese Publisher: Central China Normal University Press enhance math skills to enhance quick thinking thematic exercises effective system of training young convergence essential Contents: know addition and subtraction within Digital 5010 do not carry adder 20 within 20 within not abdicate carry adder subtraction 20 within 20 within abdication subtraction within 20 subtraction does not carry adder 30 less than 20 less than not abdicate subt. Nº de ref. del artículo: BX008736

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