在方框里填上正确的数 7+5=口4+9=口8+5-6+7 10 10 10 9+5= □ 4+7 8+6 6+9 10 10 7+ 9= 8+ 5+7 10 10 7+ 9+7= 5+6 10 10 6+ 6 10 10
在方框里填上正确的数 7 + 5 = 4 + 9 = 8 + 5 = 6 + 7 = 10 10 10 10 9 + 5 = 4 + 7 = 8 + 6 = 6 + 9 = 10 10 10 10 7 + 6 = 9+ 9 = 8 + 8 = 5 + 7 = 10 10 10 10 7 + 8 = 4 + 8 = 9 + 7 = 5+ 6 = 10 10 10 10 6+ 6 = 2 + 9 = 6 + 6= 6 + 8 = 10 10 10 10