图上画着什么？图上画着什么？ 你能写出那些算你能写出那些算 式？式？6 + 2 = 86 + 2 = 82 + 6 = 82 + 6 = 88 - 2 = 68 - 2 = 68 - 6 = 28 - 6 = 2摆一摆摆一摆7 + 2 =7 + 2 =2 + 7 =2 + 7 =9 99 99 9 2 = 2 =9 9 7 = 7 =7 72 2摆一摆摆一摆5 + 3 =5 + 3 =8 8 3 = 3 =8 85 53 + 5 =3 + 5 =8 8 5 = 5 =8 83 35+3=8，3+5就 一定等于8吗 ？5+3=3+5=85+3=3+5=87 + 1 = 87 + 1 = 88 8 7 = 7 =1 17+1=87+1=8，8-7=18-7=16 + 2 = 86 + 2 = 88 8 6 = 6 =8 8 2 = 2 =5 + 4 = 95 + 4 = 99 9 5 = 5 =9 9 4 = 4 =2 26 64 45 5+ += = =9 9 2 = 2 =7 + 2 =7 + 2 = 9 97 7 2 27 79 99 97 72 2哪两张卡片上的数相加得哪两张卡片上的数相加得8 8？哪两张卡？哪两张卡 片上的数相加得片上的数相加得9 9？生活中的数生活中的数