六年级脱式计算

1、J 3 94 5 85 20 4123£9456 + 3 X721 X2 - 5 X6366613(13+66 12+ 12 135356 X5717 + 17 X166225 X15 + 15x(3 -8219109义 11- -10+ 7 +31 +710147X48234 X 7 X 17232516 1617 251171 _ 6 + 2 _ 637373134134562151461692+ 7125)X23十三718153X45X65X432.64X5+ 32.6 X0.21X62+ 7 +6465463X4643X411+ 8 X4127心1、-(7 +2 )1-(+

2、8 )“1X 58%8X424455 X7 X44附6+9180+2.54 10 41096-3.2 X 0.5 +0.49.6一 (9.6 X4)2.08 X (9.6+ 2.4) +4.878X 0.69+ 1.2 X6.9 +6.90.78+ 0.25X4X127 X25145554X75571359236X35)(13+) + 1315111(14)2-7921822.6X 1.9 - 2.6153X1.917.64 +4.9 +6.733.4一 (1.2 +0.5) X50.25 X12.5X3.211、()147215(3+112)8788892.65X 1.7 + 1.35 X

3、1.723.4+ 7.8 2.10.75 X 18+0.152.5X 3.2 X 1.252842+ 14+74X31+125.21-11 - 7-X34-1 +6X31+14 8 16 327.6 X1+ 1.91.9 X (1.91.9)2/ 2、,13 、（5 5 卜8）（.15+犷 X14 -3- -6.46-3.544.217+ 1.5 1.5 X 0.62992+ (4-27)2 9)5332(4 6 4)+ (福 +7)51.6+ (3 5 -1.25) X4 5519.98 X 37199.8 X 1.9 + 1998X 0.829999X 7+1111X37一 一 23123

4、1 +231 仝23263+8.89(70+1)X 8.896869X 36+8.89 X1-1+2-1+3-12007X 00562006124216X-(1-331.65 +5+1.29 X0.2 + 3x20%(504X3(工1)24 X(3),94164865+ ) X3+- 151254.85 X 0.17 +0.485 X 8.33+4X99+221471416912.86 X (6.25-6-) 6454.2+4.8 -90.7 + (5 -1)X2464+ 0.8 +41.47+(2 1.02)+0.61 X 142000+12.5 +257 +9X835722 + (- -

5、2) X -3533+ ) X15-154945 - 492xU+2J51554(9201 + 工)+(4245107.28- (1.25+0.28 )9990X 200.8+1 X20080.8X4X12.5X2.52 + 1 ) X 3 5)13-X0.6 +0.6 + 331433.02 (148.4-90.85)+ 2.5(1 +2+ 2+1) +5.1 77(1.6 X 5 + 3.6 + 3)293 -X7.27 +2.7351 56X(4+5 7 8|4.855-+5.15911213 + 135X(21517X 174 14)3X71519)10.2 (1.25 + 2.5)

6、+1.59一 X 40 1640 161114034 X ( + ) X1317 134|-3 2-i-7I 5-i- oh6 I 7I3 I 2X.3令X9 I 4+9 I 545 + 4912 5 1IRX (|0+")+。00115 | 4l-+l-) X15 15 4911 3 89 8 4 91 7 (5+0.2 ) XOOI+ (31 29242IN000755 75.4 3"52 (16 哈(2+1)+5x35 3611义壬6(1 + 3) X 240.534x8+-2)：964+ 5 X (0.15 + ) 6204-X3.8 +5.2 X 80涉 0.85

7、(3-) X 12 + 0.1431111X3+3X5+5X7117X 19119X211111X2X3+2X3X4+3X4X5+1+4b3<49X50317 x+4 X1义（3)=3.6、解方程。X= 1103 x (X- 1 ) =05X4310 73X =一7 52-3 X=1_9_4325 X ( X - 1 ) =23, 21415152 x-g X =0.3,1、X x (1+4 ) =25019yi i/X(1-4 -5 尸55010XX=-82533209.5XX 1 X 3=4353.2 X4+ 50x= 112.8X 1.3 2x=5.50.3x5x= 2.13.2 X4+ 50x= 112.80.3x5 X 1.3 2x=5.50.841.63x+5x-6=11.3=9.94 义(x-0.8)=8x-0.15x=8.50.8x=1531x =18