北京版一年级数学下册《第一章20以内的退位减法》单元测试卷及答案

第第页2.十几减8、7、6第1课时十几减8、7、6(1)知识演练场1EQ\*jc0\*hps12\o(\s\up11(kě),可)EQ\*jc0\*hps12\o(\s\up11(yǐ),以)EQ\*jc0\*hps12\o(\s\up11(zěn),怎)EQ\*jc0\*hps12\o(\s\up11(yàng),样)EQ\*jc0\*hps12\o(\s\up11(jì),计)EQ\*jc0\*hps12\o(\s\up11(suàn),算)13—8?EQ\*jc0\*hps12\o(\s\up11(àn),按)EQ\*jc0\*hps12\o(\s\up11(yāo),要)EQ\*jc0\*hps12\o(\s\up11(qiú),求)EQ\*jc0\*hps12\o(\s\up11(zuò),做)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(zuò),做),EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算)。(1)先圈一圈，再算一算。(2)先画一画，再算一算。13-8=2EQ\*jc0\*hps12\o(\s\up11(bǐ),比)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(bǐ),比),EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算)。8+□=17 6+□=12 6+□=1117-8=□ 12-6=□ 11-6=□还剩几个沙包没投?33□○□=□(个)智慧加油站4EQ\*jc0\*hps12\o(\s\up11(tóng),同)EQ\*jc0\*hps12\o(\s\up11(xué),学)EQ\*jc0\*hps12\o(\s\up11(men),们)EQ\*jc0\*hps12\o(\s\up11(zhàn),站)EQ\*jc0\*hps12\o(\s\up11(chéng),成)EQ\*jc0\*hps12\o(\s\up11(yì),一)EQ\*jc0\*hps12\o(\s\up11(pái),排),EQ\*jc0\*hps12\o(\s\up11(cóng),从)EQ\*jc0\*hps12\o(\s\up11(zuǒ),左)EQ\*jc0\*hps12\o(\s\up11(wǎng),往)EQ\*jc0\*hps12\o(\s\up11(yòu),右)EQ\*jc0\*hps12\o(\s\up11(bào),报)EQ\*jc0\*hps12\o(\s\up11(shù),数),EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(jūn),军)EQ\*jc0\*hps12\o(\s\up11(bào),报)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(shì),是)8,EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(líng),玲)EQ\*jc0\*hps12\o(\s\up11(bào),报)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(shì),是)16。EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(jūn),军)EQ\*jc0\*hps12\o(\s\up11(hé),和)EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(líng),玲)EQ\*jc0\*hps12\o(\s\up11(zhī),之)EQ\*jc0\*hps12\o(\s\up11(jiān),间)EQ\*jc0\*hps12\o(\s\up11(yǒu),有)EQ\*jc0\*hps12\o(\s\up11(duō),多)EQ\*jc0\*hps12\o(\s\up11(shao),少)EQ\*jc0\*hps12\o(\s\up11(rén),人)?画一画：算一算:□○□○□=□(人)第2课时十几减8、7、6(2) 知识演练场1□+□=□□-□=□□-□=□2EQ\*jc0\*hps12\o(\s\up11(xiāng),相)EQ\*jc0\*hps12\o(\s\up11(tóng),同)EQ\*jc0\*hps12\o(\s\up11(yán),颜)EQ\*jc0\*hps12\o(\s\up11(sè),色)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(kǎ),卡)EQ\*jc0\*hps12\o(\s\up11(piàn),片)EQ\*jc0\*hps12\o(\s\up11(dé),得)EQ\*jc0\*hps12\o(\s\up11(shù),数)EQ\*jc0\*hps12\o(\s\up11(xiāng),相)EQ\*jc0\*hps12\o(\s\up11(tóng),同)，EQ\*jc0\*hps12\o(\s\up11(qǐng),请)EQ\*jc0\*hps12\o(\s\up11(tián),填)EQ\*jc0\*hps12\o(\s\up11(chū),出)◯EQ\*jc0\*hps12\o(\s\up11(lǐ),里)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(shù),数)。3EQ\*jc0\*hps12\o(\s\up11(quān),圈)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(quān),圈),EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算),EQ\*jc0\*hps12\o(\s\up11(nǐ),你)EQ\*jc0\*hps12\o(\s\up11(yǒu),有)EQ\*jc0\*hps12\o(\s\up11(shén),什)EQ\*jc0\*hps12\o(\s\up11(me),么)EQ\*jc0\*hps12\o(\s\up11(fā),发)EQ\*jc0\*hps12\o(\s\up11(xiàn),现)?11-8=2+□=□12-8=2+□=□13-8=2+□=□试着再写出两组:□-8=2+□=□ □-8=2+□=□4EQ\*jc0\*hps12\o(\s\up11(gǔ),古)EQ\*jc0\*hps12\o(\s\up11(shí),时)EQ\*jc0\*hps12\o(\s\up11(hou),候)，EQ\*jc0\*hps12\o(\s\up11(rén),人)EQ\*jc0\*hps12\o(\s\up11(men),们)EQ\*jc0\*hps12\o(\s\up11(yòng),用)EQ\*jc0\*hps12\o(\s\up11(zài),在)EQ\*jc0\*hps12\o(\s\up11(shéng),绳)EQ\*jc0\*hps12\o(\s\up11(zi),子)EQ\*jc0\*hps12\o(\s\up11(shàng),上)EQ\*jc0\*hps12\o(\s\up11(dǎ),打)EQ\*jc0\*hps12\o(\s\up11(jié),结)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(fāng),方)EQ\*jc0\*hps12\o(\s\up11(fǎ),法)EQ\*jc0\*hps12\o(\s\up11(jì),记)EQ\*jc0\*hps12\o(\s\up11(lù),录)EQ\*jc0\*hps12\o(\s\up11(liè),猎)EQ\*jc0\*hps12\o(\s\up11(wù),物)EQ\*jc0\*hps12\o(\s\up11(shù),数)EQ\*jc0\*hps12\o(\s\up11(liàng),量)。还要打几个结?□○□=□(个)智慧加油站5“?”EQ\*jc0\*hps12\o(\s\up11(chù),处)EQ\*jc0\*hps12\o(\s\up11(fàng),放)()EQ\*jc0\*hps12\o(\s\up11(gè),个)□EQ\*jc0\*hps12\o(\s\up11(tiān),天)EQ\*jc0\*hps12\o(\s\up11(píng),平)EQ\*jc0\*hps12\o(\s\up11(cái),才)EQ\*jc0\*hps12\o(\s\up11(néng),能)EQ\*jc0\*hps12\o(\s\up11(bǎo),保)EQ\*jc0\*hps12\o(\s\up11(chí),持)EQ\*jc0\*hps12\o(\s\up11(píng),平)EQ\*jc0\*hps12\o(\s\up11(héng),衡)。两端一样重才能使天平平衡。3.十几减5、4、3、2十几减5、4、3、2知识演练场1EQ\*jc0\*hps12\o(\s\up11(bīng),冰)EQ\*jc0\*hps12\o(\s\up11(shàng),上)EQ\*jc0\*hps12\o(\s\up11(hái),还)EQ\*jc0\*hps12\o(\s\up11(shèng),剩)EQ\*jc0\*hps12\o(\s\up11(jǐ),几)EQ\*jc0\*hps12\o(\s\up11(zhī),只)EQ\*jc0\*hps12\o(\s\up11(qǐ),企)EQ\*jc0\*hps12\o(\s\up11(é),鹅)?EQ\*jc0\*hps12\o(\s\up11(tián),填)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(tián),填)。12-3=□(只)12 □+3=12 13-3=□? 12-3=□ 12-3=□2EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(kē),蝌)EQ\*jc0\*hps12\o(\s\up11(dǒu),蚪)EQ\*jc0\*hps12\o(\s\up11(zhǎo),找)EQ\*jc0\*hps12\o(\s\up11(mā),妈)妈。(EQ\*jc0\*hps12\o(\s\up11(lián),连)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(ma),连))13-5 13-6 11-3 14-5( 11-2 12-43EQ\*jc0\*hps12\o(\s\up11(yáng),阳)EQ\*jc0\*hps12\o(\s\up11(guāng),光)EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(xué),学)EQ\*jc0\*hps12\o(\s\up11(zài),在)EQ\*jc0\*hps12\o(\s\up11(zhí),植)EQ\*jc0\*hps12\o(\s\up11(shù),树)EQ\*jc0\*hps12\o(\s\up11(jié),节)EQ\*jc0\*hps12\o(\s\up11(kāi),开)EQ\*jc0\*hps12\o(\s\up11(zhǎn),展)EQ\*jc0\*hps12\o(\s\up11(zhí),植)EQ\*jc0\*hps12\o(\s\up11(shù),树)EQ\*jc0\*hps12\o(\s\up11(huó),活)EQ\*jc0\*hps12\o(\s\up11(dòng),动)，EQ\*jc0\*hps12\o(\s\up11(dì),第)EQ\*jc0\*hps12\o(\s\up11(yī),一)EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(zǔ),组)EQ\*jc0\*hps12\o(\s\up11(zhèng),正)EQ\*jc0\*hps12\o(\s\up11(zài),在)EQ\*jc0\*hps12\o(\s\up11(zhí),植)EQ\*jc0\*hps12\o(\s\up11(shù),树)。(1)□○□=□(人)(2)第一小组要种13棵树，已经种了4棵，还要种多少棵?□○□=□(棵)智慧加油站4EQ\*jc0\*hps12\o(\s\up11(yǒu),有)EQ\*jc0\*hps12\o(\s\up11(qù),趣)EQ\*jc0\*hps12\o(\s\up11(de),的)EQ\*jc0\*hps12\o(\s\up11(yóu),游)EQ\*jc0\*hps12\o(\s\up11(xì),戏)。(EQ\*jc0\*hps12\o(\s\up11(yí),移)EQ\*jc0\*hps12\o(\s\up11(dòng),动)EQ\*jc0\*hps12\o(\s\up11(yì),一)EQ\*jc0\*hps12\o(\s\up11(gēn),根)EQ\*jc0\*hps12\o(\s\up11(xiǎo),小)EQ\*jc0\*hps12\o(\s\up11(bàng),棒)，EQ\*jc0\*hps12\o(\s\up11(shǐ),使)EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(shì),式)EQ\*jc0\*hps12\o(\s\up11(chéng),成)EQ\*jc0\*hps12\o(\s\up11(lì),立))练习一 知识演练场1□○□=□(个) □○□=□(只)2EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算),EQ\*jc0\*hps12\o(\s\up11(bǐ),比)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(bǐ),比)。10-7+4= 10-9+3= 15-5-1= 13-3-2=14-7= 13-9= 15-6= 13-5=3EQ\*jc0\*hps12\o(\s\up11(xiān),先)EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算),EQ\*jc0\*hps12\o(\s\up11(zài),再)EQ\*jc0\*hps12\o(\s\up11(shuō),说)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(shuō),说)EQ\*jc0\*hps12\o(\s\up11(nǐ),你)EQ\*jc0\*hps12\o(\s\up11(fā),发)EQ\*jc0\*hps12\o(\s\up11(xiàn),现)EQ\*jc0\*hps12\o(\s\up11(le),了)EQ\*jc0\*hps12\o(\s\up11(shén),什)EQ\*jc0\*hps12\o(\s\up11(me),么)。4(1)下面计算12—5的方法中，正确的有哪些?在□里画“✔”。10-5=511-5=612-5=7(2)下面哪些问题可以用12—5解决?在□里画“✔”。12个苹果，红苹果有5个，其余的是绿苹果，绿苹果有几个?12个苹果，吃掉了5个，还剩几个?一筐苹果，先吃了12个，又吃了5个，一共吃了多少个?5EQ\*jc0\*hps12\o(\s\up11(suàn),算)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(suàn),算)，EQ\*jc0\*hps12\o(\s\up11(tián),填)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(tián),填)。按照发现的规律填一填：17-8=□-□=□-□=□-□6解决问题。(1)还有几个小动物？十二生肖。(2)妈妈包了16个包子，每个笼屉装7个包子，装了一笼后，剩下的包子还能再装满一笼吗？□○□=□(个)□○□能□不能 □(画“✔”)智慧加油站7EQ\*jc0\*hps12\o(\s\up11(àn),按)EQ\*jc0\*hps12\o(\s\up11(yāo),要)EQ\*jc0\*hps12\o(\s\up11(qiú),求)EQ\*jc0\*hps12\o(\s\up11(tián),填)EQ\*jc0\*hps12\o(\s\up11(yi),一)EQ\*jc0\*hps12\o(\s\up11(tián),填)。(1)在□里填上合适的数。 □-4=8 11-□=4(2)□里最小能填多少？ □-4>8 11-□<4(3)□最大能填多少？ □-4<8 11-□>4第一章20以内的退位减法参考答案1.十几减9第1课时十几减9(1)1.9+5=1414-9=[52.(竖排)15 6 167178 189我发现一个加数不变，另一个加数增加1，和也增加1。(发现合理即可)3.13-9=411-9=24.12-9=35.17-6=1111-9=2解析根据式子△+6=17可以得到△=17-6=11,而9+◯=11,所以◯=11-9=2。第2课时十几减9(2)1.②2.3.23456789我发现，减数不变，被减数增加1，差也增加1。(发现合理即可)4.14-9=55.17-9解析根据题意可知，算错的答案是3，比正确的答案少5，所以正确的答案是8,即1□-9=8。被减数为8+9=17,正确的算式为17-9。2.十几减8、7、6第1课时十几减8、7、6(1)1.(1)(圈法不唯一)(2)(画法