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1、精心整理两位是减一位数退位减法练习题26-9=32-7=24-6=25-7=35-6=42-8=26-8=32-8=32-9=35-7=33-5=33-9=34-5=34-6=34-9=厂1/人，|1 1 :35-9=36-7=36-9=37-9=38-9=_ X. 叱h 人j |k*20-4=40-4=21- 8=20-8=30-7=-J40-2=31- 4=! 1 W131-7=40-仁22-6=、I 11.h用飞 A.40-3=40-5=40-9=41-2=33-8=41-3=41-5=41-7=23-8=41- 9=42-3=22-9=23-5=25-8=27-9=42-4=42-5=
2、42-7=42-9=43-4=43-5=43-7=61- 8=53-5=62-5=53-8=43-9=44-5=44-7=45-6=45-8=53-7=61-4=46-7=46-9=47-8=48-9=54-8=60-6=1 1 11 h63-6=ri二：人 11 1 163-5=50-1 =50-3=50-5=50-7=55-8=62-8=j ?50-9=51-2=51-5=-J64-8=51-7=r 1 I 151-9=52-3=52-7= |43-6=44-8=52-8=52-9=53-4=53-6=F 145-9=53-9=54-5=46-8=61-7=60-8=54-6=54-7=5
3、0-2=61-3=54-9=55-6=50-6=61- 6=8 =27 -8 =37 -8 =64 -6 =54 -6 =6 =34 -6 =24 -6 =14 -6 =25 -6 =9 =33 -7 =46 -9 =22 -4 =23-86 =52 -9 =42 -8 =32 -4 =75-75 =46 -8 =28 -9 =16 -8 =21-49 =35 -6 =31 -4 =16 -7 =33-55 =42 -5 =57 -9 =61 -4 =73-56 =54 -7 =23 -4 =36 -8 =14-58 =23 -6 =26 -8 =14 -7 =82-67 =91 -4 =67
4、 -9 =55 -6 =47-84 =21 -4 =31 -4 =41 -4 =51-47 =24 -7 =34 -7 =483=?8417441412621832741684111420-5=30-6=20-5=90-1 =20-3=60-4=30-4=37-8=41-7=81- 2=50-7=40-3=160-2=20-8=50-4=70-4=70-8=40-7=80-4=60-7=80-5=70-3=70-5=40-6=80-8=30-5=50-6=60-2=40-5=50-7=60-3=22-4=23-9=42-6=63-8=53-6=54-9=26-8=85-8=38-9=73-7=
5、38-9=45-9=72-3=24-6=63-8=72-5=34-8=71-7=65-8=48-9=24-7=53-9=68-3=46-9=21-7=把正确的得数圈出来。45 8 (37,47) ?92 9 (2 ,83 ) 847 (14,77) ?37 6 (21,31 ) 提问：在计算两位数减一位数的减法时，你有什么要提醒大家的？56 5?6186310?54 957 7?72- 42.填一填。在O里填“”、“V”或“=”。61 40 65?46052 6 72 2070?3Q 35923+8023 8?84-9084 5(1) 直接写得数。74 6 = ?80 7= ?54 7= ?2
6、7 8 =49 5 = ?25+ 6= ?98- 9= ?62 20 =(2) 在得数比50小的算式后面画“V”。54 9口 ？42+ 8?口 ？74 40 59 4 ?42+ 6?口 ？36?+ 30?口(3) 解决问题。亮亮带30元去买一个书包？28元，应找回多少元？六智力冲浪，拓展练习。O和各表示什么数字？0-0= 85?o=（?）? =（?）?34 8=?43 8=?834=38 4=?18 + 6= ?27 + 7 = ?28+ 2 = ?36 + 6= ?27+ 823-9= ?94- 5 = ?77- 8 = ?60 4= ?80- 548 + 5= ?49+ 6 = ?18+
7、8 = ?48+ 7= ?18+ 7 50 - 6 ?60 7 = ?90 8 = ?50 9= ?91 2= ?7+ 56= ?9+ 35 = ?4+ 36= ?8+ 49= ?6 + 68= ?42 7= ?32 8= ?73 8= ?83 9= ?34 5= ?24+ 6= ?15+ 7= ? ?55+ 8 = ?67+ 5 = ?48+ 6= ?93 9= ?44 5= ?84 6= ?46 7= ?85 9= ?87+ 3 = ?76+ 4 = ?77+ 9= ?68 + 9= ?69+ 1 = ?25 6= ?15 7= ? ?65 8 = ?75 9 = ?56- 7= ?58+
8、 2= ?68+ 3?39+4 = ?47+ 5 = ? 75 + = ?72 7 = ?42 8 =80 3= ?91 5= ?94 7 = ?44+ 7= ?32+ 8 ?12+ 9 = ?28+ 4 = ?86+ 5= ?84- 8 = ?35- 695 - 7= ?75 8= ?34+ 6 = ?43+ 7 = ?53+ 8968= ?66 9= ?57 8= ?87 9= ?48 9=69 + 5?73+ 7= ?35+ 7= ?89+ 2= ?41 6= ?61 7= ?22 9= ?91 8= ?83 476 + 5= ?57+ 4= ?19+ 5= ?37+ 6= ?45+ 761 8= ?24 6= ?54 7= ?84 8= ?34 9
