
1至5的数学加减法.ppt
33页三、三、1~~5 的加减法的加减法3 24 1 41322共有共有 3 个245231 加加 2 等于等于 31···加号加号+= 32···等号等号加加 法法3 + 1 = 43 加加 1 等于等于 44 14 + 1 = 551 2 3 4 5 、、、、3 + 2 = 52 + 3 = 51.33 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 225 - - 2 = 31、、2、、3、、 4、、51、、2、、32535 - - 1 =45 - - 4 =11.2 + 1 = 32 + 2 = 43. 2 + 1 = 33 + 2 = 51 + 3 = 44.41 + =353 + =25.3 - - 2 =14 - - 1 =37. 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 =121003 - - 3 = 4 + 0 = 455 - - 0 = 03 - - 0 =34 - - 0 =40 + 2 = 20 + 0 = 05 - - 4 =11 - - 1 =01. ( )( )( )( )( )( )5 2 0 2. 从小到大排一排。
从小到大排一排4310523. 3 - - 1 =23 - - =13 - - =0324. 3 + =300 + =335. 34 - - =124 - - =214 - - =304 - - =46. 看谁算得都对看谁算得都对2 - - 0 =5 - - 2 =3 + 1 =5 - - 4 =23413 + 0 =4 - - 4 =5 - - 3 =2 + 3 =30250 + 5 =4 + 1 =4 - - 2 =4 - - 3 =55217. 123458. 比比 多多____比比 少少____。
