
5以内的减法.ppt
24页5以内的减法 521 32 2213 24 13441151+2=2+2=4+14+1=3+1=3+1=2+1=1+1=2+3=3+2=33 减减 1 等于等于 2···减号减号1- -= 2减减 法法4 - - 2 = 4 减减 2 等于等于 22 还剩几朵呢? 4-1=3 - =先摆,再说算式先摆,再说算式5 - - 2 = 31、、2、、35、、4、、32535 - - 1 =45 - - 4 =11.4 - - 1 =32. 摆一摆4 - - =311.2 + 1 = 32 + 2 = 45.3 - - 2 =14 - - 1 =36. 先用先用 摆一摆,再说得数摆一摆,再说得数3 - - 2 4 - - 3 5 - - 2 7. 3 - - 2 =14 - - 1 =32 - - 1 =124 - - =245 - - =18.1 + 3 = 414 - - =39.10. 2 + 1 = 32 + 2 = 41 + 4 = 53 - - 2 =14 - - 2 =25 - - 4 =111.12345 5-1=4 5-2=3 5-3=2 5-4=1 5-3= 4-3= 4-1= 5-2= 3+2= 3-1= 5-4= 4-2= 3+1= 5-1=。
