2022年六年级数学简便计算练习题答案.docx

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1、精选学习资料 - - - - - - - - - 优秀学习资料 欢迎下载六年级数学总复习简便运算练习题一、口算;( 10 分)102.65 7.35 0 3.8 0 9 0.08 0.72 24 0.4 60 67.50.25 67.75 614.4 20.4 0.770.33=1.151.4 1.6=5-3=2 80 0.125=80* 1 =10 3 31 = 3 * 1 1 = 18 7 7 7 3 7 49二、用简便方法运算下面各题;(90 分, 4 205 2)1125997 998+1246 4 1 +3.2 5 2 +6.8 12 2 1 2 +2 2 400 125 8 25

2、( 37 8)3 3 5 7 5=1125-(1000-3 ) = (998+2)+(1246-2 ) = (4 1 5 2 )+(3.2+6.8 )=12 2 -2 2 1 2 =400 ( 125*8)=25*8*37 3 3 5 5 7=1125-1000+3 =1000+1244 =10+10=20 =10-1 2 =8 5 =400 1000= 2 =200*37=7400 7 7 5=125+3=128 =2244 1 1 12 1 3 2 4 4 34 2 13 125 8.8 4.354.25 3.65 3.75 3.4 993.4 4 6 4 15 7 34=(6 4 )*1

3、2 = 7 2 4 4 =34 23413 =125*(8+0.8) = (4.35+3.65 )+(4.25+3.75 )=3.4* (99+1)24 24 4 15 7 34= 2 *12 =(74 )*2 4 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 24 4 7 15=1 =1*2 4 =2 4 =81 =1000+100=1100 15 15名师归纳总结 - - - - - - -第 1 页,共 7 页精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -优秀学习资料欢迎下载17.15 8.47 1.53

4、 175 3 63 4 457 2 91 55 112 0.125 9 0.25 32 22.32.45 5.3 4.55 6=17.15- (8.47+1.53 ) =175 4 65 3 63 = 47 911 55 112 = 91 * 81 *32 =22.3-5.3-4(2.45+4.55 )=17.15-10 =13-33 =9 41 = 47 * 95 115 112 =1 =17-7=10 9=7.15 =(7 92 )95 = 1151111 127 + 185 72 4.25 2435 2 61 1 63 187.7 4 11187.7 437 81 57.125 21 0

5、.5 23 4 15 573 143 4 =11 72127 72+ 185 72 =4 241 +1 43 - (3 45 +2 61 ) =187.7* 6(11-1 ) =437 81 57 21 81 21 = 23 4 15 5 7 3 14 *4 )3=11*6+7*4+5*3 =6-6=0 =1887 =1 (43 27 57 81 -1 ) = 815 49 * 5 72 )7=66+28+15 =1 *100=50 = 249 * 153 = 775=109 2.42 3 +4.584114 31 32 2 6.62.5 6 57 11 861 231 34.6+32 5 +

6、63 5 +5.4 2.8+54 9 +7.2+3544 524 5 +5 12 39=2.42*4 +4.58 34 -34 *1 =2 31 *6 23 2 51 *6 23 = 5117 8( 61 23 +1 3)=43 +3 52 +6 53 +5 52 = 5(2.8+7.2 )+54 +3 95 = 44 9 524 55 -12=4 (2.42+4.58-1 ) = 321 *2*6 23 = 5117 88=38 7 =43 +5 52 +( 3 52 +6 53 )=10+9=19 =2-55 12 =1712=4 *6=8 =10+10=20 3第 2 页,共 7 页精选

7、学习资料 - - - - - - - - - 优秀学习资料欢迎下载0.75+5 8 +1 4 +0.375 5-214 17 -133 4 8 +2.25+55 8 +732 7 5 +45 7 +236 53 11 164 7 +1653 2 7 +35 933 7 +14 9 +144511717=43 +2 81 +5 45 +7 83 = 472 5 +23 5 +45=53 6 11 +16 5 11164=23 7 +14 733 7 +(35 9 +14 9) =3 + 45 + 81 + 43 = 85-( 214 17 +1 3 17)=43 +5 85 +(2 81 +7

8、43 )=10+45 4 7=70-164=4 +5=5 74 = 73 + 41 +(45 + 83 )=2 =5-4=1 87=10+10=20 =145 =53 7370.625 0.5+5 8 +1 2 62.5% 313 8 72 5 13 313164 5 +24 7 -1.8 594 5 +994 5 +9994 5 +9999448.3-151 6 -4595 6 4.25+41 4 6 名师归纳总结 =(1+9+99+999+9999 )4 5= 48.3-(151 6 +45 6)=95 *4 61 +4 41 * 41 = 65 * 81 + 25 * 81 * 25 =

9、 8313 8 313 8 72 5 13=164 5 +2 4 7 -14 第 3 页,共 7 页5=11107 4 5=483 -20=28 103 = (9 105 + 61 )*4 61 = 45 * (81 + 21 +1) =1 2 72 5 13 =725=164 5 -14+241375=10*17 = 485 = 2154+24 7 =18132.5 9 10 + 9 10 + 9 10 + 9 10 535223 4 +25 75%-7 0.75 0.25 63.51 4 1316 7 15 2.5-21 2 4 7 1538 9 +3.125+1 1 9 +171125-

10、996=21 *4* 29 =22* 103 +25* 43 -7* 43 = 41 *63 41 -21 *13 41 =6 27 *2 151 -2 21 *4 215 7 = 38 9 +11 9 +( 31+17 8)=1125-(1000-4)8=5 *4* 29=10*9 =9 = 10(22+25+7)*3 = 471 = 21 * (63 41 -13 21 ) = 2(67 -4 157 ) *2 151 =5+5=10 =1125-1000+4 210=1 *50=12 41 =2* 25 =5 =125+4=129 2- - - - - - -精选学习资料 - - - -

11、 - - - - - 优秀学习资料 欢迎下载111+999 56 3 7 -3 8 49.5 103 5 -50- 1 2 0.6 11 414 19 +5 5 19 14 7 + 7 11 45 7 9 + 4 150.6 8973 837.5%+104 0.375 =110+(1+999)/(563 7 -56 3 8) =49 1 *1032 5 -491 23 =5 11 414 19 +5 5 19 * 7 11 + 7 11 =45* (7 +9 15 4 -3 ) =58973 8 3 +1048 38=(110+1000) ( 24-21)=49 1 (102 3 -5 5 3

12、 ) = 11(4 719 +5 1419 +1)5=45* 7 +45*9 15 4 -45* 3 = (897-1+104 )5 38=1110* 1 =349 1 *10=495 =2 11 *11=7 7=35+12-27=20 =(896+104)3 =10008 8 3=37531 4 53 85.375 3.5 11 4 +1.25 2 7 10 +3.8 4 72 156-56 72 25 32 125 709 99+709 299 101名师归纳总结 =13 * (5 43 -5 83 ) =3 81 *1 21 +1 41 *2 47 +3 104 * 55=72*(156

13、-56)=25*(8*4)*125 =709(99+1)第 4 页,共 7 页4=(31 +2 27 +3 104 )* 55=72*100 =25*8* (4*125)=709*100 =0 4=(7 +2 27 + 1019 )* 55=7200 =200*500=100000 =70900 471 99 =(35 +2 107 + 1038 )* 105563 999 48439+1001 446+295 888+999 2100 20 3755+2996 - - - - - - -精选学习资料 - - - - - - - - - 名师归纳总结 优秀学习资料欢迎下载第 5 页,共 7 页

14、21 2 6.6+2.5 6375.3 99+75.3 4.6 3.7+54 0.37 0.1253 4+1 8 8.25+12.5% 8.37-3.25-1.37+1.75 =21 *6 23 +2 51 *6 23 =75.3* 5(99+1) =4.6*3.7+5.4*3.7 =1 * 83 + 41 *8 81 + 41 =8.37-1.37-8(3.25+1.75 )=21 (6 23 +6 53 ) =75.3*100 = 5(4.6+5.4 )*3.7 =1 (83 + 41 +1) =7-5=2 4=21 *12 26 =7530 =10*3.7 = 51 *2= 814=5

15、* 266 =33 =37 5117 861 31215 3 144.255319.826.573.43 4.6+32 5+63 5+5.4 43 8+2.25+55 8+739.63 2.5 4 6 0.25 =117 - (6 87 -8 =3 81 +1 2 )=153 37 =1583 - (4 1 +5 3 )=19.82- (6.57+3.43 )=4.6+5.4+ (3 2 +6 3 )=4 3 +5 5 +(2 1 +7 3 )=9.63/ (2.5*4 ) =6/14 4 4 5 5 8 8 4 43 -10=5 3 =19.82-10=9.82 =10+10=20 =10+

16、10=20 =9.63/10=0.963 =6*4=24 14 1414=1137 12 5 125 78+ 5 858 1516+ 5 27 1018 (4 9+ 5 6)2 7+2 3 5 (1 61 12) ( 244 5)73=3-(7 + 125 )12=5 (73 + 85 ) = 81 * 31 + 25 * 279 =18* 104 +18* 95 = 62 *(7+5) = 31 *24-121 * 1245=3-1=2 =5 = 7=1 * 31 + 61 + 21 = 61 * 1 =2*4+3*5 =3 21 =8+15=23 =2*4=832 *12 =2-31 =1

17、 151415- - - - - - -精选学习资料 - - - - - - - - - (5 77+ 4)4优秀学习资料欢迎下载51 (2 3+ 1)1 13 2 7+2 3 5 8 1 2 3 5 10 2 15 3 11 15 11 12 1034500 75 753=(5 +1)* 74 * 77 = 41 / (52 + 391 ) = 652 (7+5) = 31* (1 * 23 )2=2 *165+ 153 *165 118=15 = 71 * 539 + 21 *65 =2*4=8 = 51 * 83 = 43 =2*11+3*15 32=39 +13=16 9 =22+45

18、=6710 1032 1 17 45(253 )41 4118 259 167 259 169(213 74 21)71(999 ) 9 104 55 61241648名师归纳总结 =( 8+17)*12 5=25*4+3 *4+ 1 =4 41 =2*4(18 + 7 +1)9 =2125 25 169 = 9 =1 1 =21*16 8 8(3 +71 =544 )* 1 =99*7 41 =11+41 + 9 * 1 =9 10 91 =11 1 =10 104 * 5 * 85 6 516 =1 115 15第 6 页,共 7 页=25*12 =100+3+ 5=5*12=60 =10

19、31 414 (154 52 )310 11(5 64 ) 30 51 3315 5 6 99 54 11 5 71158 8141 82610118=14 / (1514 / (154 * 10 + 2 * 10 ) = 5 *30+ 4 *30 =5 11 3 11 6 58 + 20 ) =25+24=49 =611 331 +3*2 =1-31 = 31 =4-21 =4-1 2(5 + 7 ) =11 111 =2 10 =11 111 * (58+41+1)81 *100=12 18 2=14 / 1544=14 * 153 = 473310- - - - - - -精选学习资料

20、- - - - - - - - - 44 75 4145 62 53优秀学习资料欢迎下载3 5 153 0.6 53 (4 51 4) 7 3 7 104(5 81 )25 235 - 135 18 525558=4 -71 = 22 +(32 * 55 ) = 34 / (51 * 88 ) = 53* (153-53)5=1 = 142 *2=1 31 = 34 / 51 = 54 *5=4 = 53 *100=3*20=60 510 - 7 19 - 12 19 + 1251 35 2313.098.12 4.88 1910名师归纳总结 =10-(7 + 1912 )+ 191 =25* 191 * 35 * 23 =13.09-10(8.12+4.88 )第 7 页,共 7 页=10-1+1 = 1925 =6 41 =13.09-13=0.09 4=91 19- - - - - - -

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