三年级下册数学脱式计算200题.docx

1、三年级下册数学脱式计算200题82443 （601-246）5 201+232-365= = = = =（25+38）15 （59-187）3 1500-1258= = = = =2589 （601-246）5 201+232-365= = = = =(25+33) 26 2+356= 63147-198= = = = =735-3512= 540(65-59) 789-1345= = = = =224221 213410 402174= = = = =147728 94420 2804= = = = =12052 202369 305240= = = = =819877 665+774 92

2、1+74= = = = =8062 7707+65 807202= = = = =100505 35357 302302 = = = = =60083 401005 434255 = = = = =60123 648456 640604 = = = = =567366 500(400396) 7295= = = = =564+264-453 7650-(546+4530) 659-450= = = = =980+980 9000-(4500+250) 6700+728= = = = =146+95 900(71-68) 1809-426= = = = =126453 8(910-720) 76

3、0-540+1110= = = = =6500+1250-3500 8030+5600 9450-3200-4200= = = = =2400645 800 7180 16002230 = = = = =4000 8 + 350 320864 270 3 9= = = = =630 9 + 320 2800+32 6 30069 = = = = =(6900-2400) 5 （729）(568) 54 9 8= = = = =280 4 5 608+1570 60(23-17) = = = = =224221 213410 402174= = = = =147728 94420 2804= =

4、 = = =12052 202369 305240= = = = =819877 665+774 921+74= = = = =8062 7707+65 807202= = = = =100505 35357 302302 = = = = =60083 401005 434255 = = = = =60123 648456 640604 = = = = = 57486 427366 374198= = = = =104204 153105 255426= = = = =35587 729366 214549 = = = = = 72895 364212 255164 = = = = =5673

5、66 500(400396) 7295= = = = =564+264-453 7650-(546+4530) 659-450= = = = =980+980 9000-(4500+250) 6700+728= = = = =146+95 900(71-68) 1809-426= = = = =126453 8(910-720) 760-540+1110= = = = =6500+1250-3500 8030+5600 9450-3200-4200= = = = =2400645 800 7180 16002230 = = = = =4000 8 + 350 320864 270 3 9= =

6、 = = =630 9 + 320 2800+32 6 30069 = = = = =(6900-2400) 5 （729）(568) 54 9 8= = = = =280 4 5 608+1570 60(23-17) = = = = =96049 35059 4505+1250 = = = = =(6900-2400)5 7515205 309066= = = = =(387387)0 16016080 7505505= = = = =(111189)3 1258100 62500 = = = = =(17)(166) 81044 331149= = = = =187299299 58749

7、6674 26602626= = = = =153153+657 32(3216) 300(300222)= = = = =7515205 （15075）（2520） = = =33901095 687（9967）= = = = 1000（1000988） 35602090= = = = （250150）(306) 6879993= = =（4870-3675）72009 (9467-5642)(35070)= = = = 96049 35059 4505+1250 = = = = = (6900-2400)5 7515205 309066= = = = = (387387)0 1601608

8、0 7505505= = = = = (111189)3 1258100 62500 = = = = = (17)(166) 81044 331149= = = = =187299299 587496674 26602626= = = = =153153+657 32(3216) 300(300222)2、如果我们想要设计一个合理、清洁的垃圾填埋场，我们首先应考虑要解决的问题有哪些呢？= = =19、阳光、空气、水、土壤、岩石、植物、动物构成了我们周围的环境。我们人类也是环境中的一部分，我们都生活在一不定的环境之中。人与自然和谐相处，共同发展，是我们共同的责任。= = =7、月球的明亮部分，上

9、半月朝西，下半月朝东。7515205 （15075）（2520） = = = =16、大量的研究事实说明生命体都是由细胞组成的，生物是由细胞构成的。我们的皮肤表面，每平方厘米含有的细胞数量超过10万个。33901095 687（9967）10、生物学家列文虎克于1632年出生在荷兰，他制成了世界上最早的可放大300倍的金属结构的显微镜。他用自制的显微镜发现了微生物。= = = = 二、问答题：1000（1000988） 35602090 1、人们把放大镜叫作凸透镜（边沿薄、中间厚、透明），它能把物体的图像放大，早在一千多年前，人们就发明了放大镜。放大镜在我们的生活、工作、学习中被广泛使用。= = = = 18、建立自然保护区是保护生物多样性的有效方法，我国的九寨沟、长白山、四川卧龙等地都建立了自然保护区，自然保护区为物种的生存、繁衍提供了良好的场所。（250150）(306) 68799933、我们在水中发现了什么微生物呢？（P18）= = = = 2、你知道哪些昆虫？