《《十幾減5、4、3、2》教學課件1》由會員分享，可在線閱讀，更多相關(guān)《《十幾減5、4、3、2》教學課件1（12頁珍藏版）》請在裝配圖網(wǎng)上搜索。

1、十十 幾幾 減減 5 5、4 4、3 3、2 2 9+ 9+（ ）=11 9+=11 9+（ ）=14=14 8+ 8+（ ）=12 8+=12 8+（ ）=11=11 7+ 7+（ ）=11 6+=11 6+（ ）=11=115 54 43 34 45 5211 11 8 = 8 = 13 13 7 = 7 = 13 13 6 = 6 = 18 18 9 = 9 = 15 15 8 = 8 = 17 17 9 = 9 = 11 11 7 = 7 = 14 14 6 = 6 = 3679784815 15 9 = 9 = 12 12 7 = 7 = 13 13 9 = 9 = 15 15 7

2、= 7 = 11 11 6 = 6 = 16 16 9 = 9 = 17 17 8 = 8 = 14 14 8 = 8 = 65485796試一試12-5=12-5=12-4=12-4= 12-3=12-3=7 78 8911-2=11-2=11-3=11-3= 11-4=11-4=9 98 8797614145 115 114 114 113 113 112 2 11115 125 124 124 123 123 125 58送送 信信15 9 = 15 6 = 11 9 = 11 2 = 17 8 = 17 9 = 69299811 8 = 11 3 = 16 9 = 16 7 = 11

3、4 = 11 7 = 38797413 2 = 13 3 = 13 4 = 13 5 = 13 6 = 13 7 = 1110987615 9 = 15 8 = 15 7 = 15 6 = 15 5 = 15 4 = 67891011 7 + 6 =13 7 = 13 6 = 8 + 7 = 15 8 = 15 7 = 13671578 7 + 5 = 12 5 = 12 7 = 6 + 5 = 11 5 = 11 6 = 1275 11651212只只？只？只（只）1212 4 48 81111人人? ?人人（人）11112 29 91313個個（個）13134 49 9還剩多少瓶？還剩多少瓶？14145 = 95 = 9（瓶）（瓶）答：還剩答：還剩9 9瓶。瓶。