正確: 11+1=12, 12-3=9, 20-20=0, 21-3=18, 9+8=17, 16+4=20, 9+1=10, 4+4=8, 20+12=32, 2X18=36, 錯誤: 1+1=1.9, 2X4=9, 2-2=0.1, 9.9-9.8=1, 5.5+5.5=10, 6.4-6=40, 1+O=1, 6.6+4.4=20, 30+30=90, 60+60=12.0,

打數學

Papan mata

Gaya visual

Pilihan

Tukar templat

Pulihkan autosimpan: ?