5+3= - 8, 6+4= - 10, 7-3= - 4, 10-4= - 6, 9-8=  - 1, 7+2= - 9, 4+3= - 7, 8-3= - 5, 7-4= - 3, 8-8= - 0,

Petites additions et soustractions <10

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