Math roller stamp
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100 exersicers Math roller stamp / 1000 exersicers lej cov menyuam stamp
Qhov no yog kev xyaum lej lej uas siv cov menyuam los hloov cov lej, sib ntxiv, rho tawm, sib faib, faib, sau rau hauv qhov khoob, thiab lwm yam, txhua lub thwj yam tsawg kawg yog 100 qhov sib txawv.
