整十?dāng)?shù)加一位數(shù)及相應(yīng)的減法練習(xí)題

1、一、口算60 分40+2=40+2=70+3=10+8=80+0=3+90=10+6=30+2=50+9=9+80=1 + 10=8+80=20+1 =20+3=0+10=6+40=6+50=20+4=20+2=6+60=90+2=80+4=90+4=0+80=60+4=60+1 =2+60=30+4=40+6=8+80=1+60=1+90=70+1 =5+10=40+0=90+1 =10+7=9+90=40+5=30+5=80+9=80+2=40+1 =80+2=1+80= !9+70=40+0=40+9=90+4=20+7=2+80=0+30=2+30=0+70=4+20=70+3=20+

2、1 =4+60=90+9=50+7=3+40=80+1 =20+8=4+90=8+10=90+9=0+30=80+8=7+40=60+2=2+60=8+10=10+6=50+6=70+1 =3+20=50+7=50+5=8+20=3+70=80+9=30+3=4+50=1+30=0+90=9+10=20+3=2+60=1+30=3+30=50+5=4+50=8+30=30+8= 30+9=12 2= 52 2=35 5 =80+1 =8+40=70+2=70+0=1+70=65 5=57 - 7=62 -160= 18-8=86 -6 =68-8=4540=55 - 50= 93-90= 75

3、 - 70= 38-30=27- 20=57 7=37 - 7=10030= 66-6=43-3=94-90 =34 - 30 =二、在括-號里填上適當(dāng)?shù)臄?shù).9分100()=8030+()=3740+()=二 4546 -()=66+()=362+() =27()一3= 30()+8= 686+()=55三、應(yīng)用題.12分1 .圖書室有78本書,借走8本,還剩多少?2. 學(xué)校有跳繩40根,乂買來5根,現(xiàn)在有多少根？3. 小紅借給李軍10本練習(xí)本,乂借給王思8本練習(xí)本,共借出多少本?4. 王伯伯要修28張桌子,已修好8張,還要修幾張?四、生活問題我解決. 10分1. 小白兔摘了 23個蘿卜,小灰

4、兔摘的和小白兔差不多,小灰兔可能摘了多少個蘿卜？ 在你認為適宜的答案下面畫W . 小灰兔比小白兔少摘了個20個 23個 50個2. 星期天,貓媽媽和小貓一起去釣魚,它們一共釣了 38條魚,其中貓媽媽釣了 30條,想一 想,小貓釣了條.看一看,想一想,填一填.3. 46里面有個十和個一.4. 里面有5個十和9個一.5. 十位上是5,個位上是2的數(shù)是.6. 有一個兩位數(shù),個位上是 3,十位上的數(shù)比個位上的數(shù)多 2,這個數(shù)是.7. 在12、36、50、34、18、90這6個數(shù)中,比36小一些的數(shù)是,比36大一些的 數(shù)是,比12大乂比34小的數(shù)是,比50大得多.五、比一比,排一排.9分1. 470 7

5、4 59 O 55 100 O97 60 O 702. 72< (3. 把 80、()< ()36、)v()>56 80 > ()63、56、37按從小到大9:的順序排列起來：()< ()< ()40+2 =70 +3 =1 0+ 8 =80 +0 =40 + 5 =3+ 90 =9+ 80 =1 0+ 6 =30 +2 =50+ 9 =1+ 1 0 =0 +1 0 =8+ 80 =20+ 1 =20+ 3 =6 +40 =6+ 60 =6 +50 =20 +4 =20+ 2 =90+ 2 =60+ 4 =80 +4 =90 +4 =0 +80 =60+ 1

6、 =8+ 80 =2+ 60 =30+ 4 =40 +6 =1+ 60 =1+ 90 =70 +1 =5+1 0 =40+0 =90+1 =301 0+ 5 =+ 7 =9+90 =40+5 =80+9 =40+ 1 =80+2 =1 +80 =9+ 70 =40 +9 =20+7 =2+80 =0+ 30 =2+30 =0+70 =4 +20 =70+3 =20+1 =4+ 60 =90+9 =50 +7 =3+40 =80+1 =20+8 =4+90 =8+10 =90+9 =0+30 =80+ 8 =7+40 =60 +2 =2+60 =8+1 0 =1 0+ 6 =50+6 =70 +

7、1 =50+5 =8+20 =3+ 70 =80+9 =30 +3 =3+20 =0+90 =9+ 1 0 =23 - 3 =62-60 =42-2=82-2 =40-40 =94-4 =54-5 0 =94-50=57-7 =81 -30 =48- 30 =39 -9 =71 -30=53-30 =55 -5 =38- 8 =81-1 =88 -40=72-2 =78-5 0 =71- 70=1 2 -2 =57 - 7 =62-60 =52 -2 =1 8 - 8 =86-6 =68 - 8=65-5 =55-5 0 =93 - 90 =35 -5 =45 - 40=75 -70 =38 - 30 =27 - 20 =57 -7 =37 - 7 =1 00-30 =66 - 6 =43 - 3 =94 - 90 =34 -30=89 - 9 =51 -