【精品】异分母分数加、减法_2

1、异分母分数加、减法_2异分母分数加、减法_2?弨匯 ?岰灄淹 ?rial? l?3241和203107和6587和9197116113异分母分数加、减法_2异分母分数加、减法_2异分母分数加、减法_2异分母分数加、减法_2你能提出什么问题你能提出什么问题? 异分母分数加、减法_2?preadar ?ara?a?a?psitipi ?81p?piap ?ip?r8?e敬潃8s湯p ?p?e?d ?8?e8p ?ipdara ?e?d ?ipdara ?to ?ppd8 .异分母分数加、减法_2?岰?al岰? ?岰14?310 14+310=异分母分数加、减法_2?al? ?i?灄淹 灄 ?1淹-

2、?l淹 ?r岰ai灄? ri灄 ?岰灄淹 ?rial? lr?i淹 ?r岰?l淹 ?l淹 ?i?灄淹 ?岰rial? rr淹 ?rl? ?岰?lr?i淹 异分母分数加、减法_214+310=520+620=14+310=520+620=11201120?psitipi ?81p?a?a?1)?岰?al岰? ?岰 a? ?岰?al岰? ?l? ?岰r淹 ?岰r岰岰r岰?岰?岰i ?r?淹 ?灄 l淹 ?l? ?岰l?r?r?淹 ri?r岰淹.异分母分数加、减法_2?i?灄淹 ?岰rial? 岰灄 ?岰rr淹 ?l?l岰? ?rai灄? ?岰灄淹 ?rial? ar?rl? ?岰r淹 ?r岰ai灄

3、? r岰灄 .异分母分数加、减法_2?岰?al岰? ?r?淹 a? ?岰r?岰i ?l岰r?r? ar岰a岰淹 ?岰i? ?1? ? ?岰r岰a? ?1? ?ia?a ?1?匯 ?a?U ?1?匯? ?a?1?1?异分母分数加、减法_2310320310320=异分母分数加、减法_2320620310320620320310320=620320=320320?i:?岰r?岰i ?l岰r?r? ?1? ?匯? ?a?1?1?a?U ?1?异分母分数加、减法_2320620310320620320310320=620320=320320答：食品残渣多，多答：食品残渣多，多异分母分数加、减法_21.

4、?MingLgU ?MgngLMU ?g1g%1,g,%2,%3g0,0, .2.?gU%U1, Mi?uLMU ?g1g%1,g,%2%M .3. ?g1,%U0g 4.?ng,0g橔 ?0?g0g%1U ?,M%LgLM ?g1g,0g橔 . ?prea灄 ?ptira? ?poo8 ?潃earip?ai ?m? tR ?pp ?敬?8sp灄 ?pdead : 异分母分数加、减法_2异分母分数加、减法_2异分母分数加、减法_2异分母分数加、减法_23816? arial?1耀 ? 1?1i匯 ?i?浔 ?弨l1浔 ?匯1匯?浔 ?ii1 ?i 1?耀浔 ?匯1?匯1浔 ?匯1匯?浔 ?ii1 ?i 1?耀浔 浔1l弨? 浔? 浔1匯?1匯 ?匯1匯?浔 ?ii1 ?i ?ii 1?耀浔 浔1l弨? 浔?i1匯?1匯 ?i ?5 ?异分母