1、655906 5 9 5 1 1 1.5 240 ( ) 3 5 6 5 8 7 8 1 1 ( ) 59598 6 7 6 10 176.26.25 25.68.6 7 1 8 5 2 3 6 5 7 6 3 1 1 1 1 1 2 47 47 2 6 4 5 3 3 12 1 1 4 1 ( ) 10 11 2 2 5 2 131418411 26.429123 四、解方程。 13 x 0.5 4 2x 14 6 x 8 1 45% x x 28 6 7 4 1 1 x : 10 = : 0.8 : x = 50 : 8 2 9 10 2 = 0.5 : x = 0.125 :5.2 x
2、1 1 : 9 = x : 6 : x = 0.3 : 12 8 3 4 6 2 = = 7 x x 3 4 4 1.8 2 = : 6 = 3 5 0.6 x 1 1 1 : x 0.2 : x = 0.1 : 6 2 9 2 9016= 880590= 840= 9030= 361.8= 547= 0.40.4= 165%= 9 1 1 3 9 3 1 = 7 = 5 5 2 2 8 4 3 5.12.85= 5.53= 0.1252= 5.4二、根据2728756,直接写出下面各题的得数。2.728 0.2728 2.72800 2728000 75600.28 7562.8 75602
3、8 7.562.8 903197 599202 76301 35174 5655.22.2 7.32707.3270 7 6 7 1 1 1.5 200 ( ) 4 5 8 5 5 7 9 1 1 ( ) 70299 6 8 6 10 32527.94 6.1590 6 4 2 3 3 7 7 5 3 4 4 1 1 1 1 3 2 12 12 3 9 2 3 5 5 9 4 1 8 1 42 5 5 5 7 2 6489083.1 7736158 11 0.8 8 40x 118 x 9 1 90% x x 24 8 4 6 3 = : 0.9 : x = 9 : 7 5 9 18 6 =
4、0.4 : 4 0.8 x 8 : 0.6 = x : 4 : x = 0.9 : 120 1 5 3 1 3 x x 5 1 7 1 5 7 = 8 8 1.4 x x 0.7 : x = 0.35 : 5 4 6 4 969= 730470= 120= 42070= 792.2= 212= 2.10.3= 569 4 1 1 7 7 4 = 7 = 5 5 2 3 8 8 5 5.460.63= 6.591.34= 12532= 78二、根据98777546,直接写出下面各题的得数。0.980.77 98007700 0.9877 98000.077 754607700 754600.77
5、 754600770 75.46770 801101 496198 63298 48969 9944.95.3 830.02830.02 15 9 7 1 1 4.5 144 7 5 6 6 4 5 5 1 1 ( ) 95901 6 4 6 10 83.759170 7979.3 8 2 9 1 1 4 7 3 8 8 2 1 1 1 1 3 8 7 7 4 7 3 4 11 11 3 4 1 6 1 84 2 5 5 7 4 31954598.9 52.134299 x 0.2 8 200x 62 x 13 5 45% x x 36 3 6 6 8 = : 0.7 : x = 10 : 9
6、0 3 9 6 6 = 9 : x = 2.25 :5.6 x 20 : 1 = x : 0.4 : x = 30 : 1.8 3 1 3 4 9 7 x x 8 7 7 1 4 8 = 6 6 1.8 x x 90 : x = 45 :5 9 4 7636= 890580= 1710= 700462.5= 845= 0.90.1= 5830%= 5 1 2 1 1 4 6 = 3 = = 3 3 7 2 7 5 5 5.751.68= 5.360.67= 1.2516= 2002= 二、根据87806960,直接写出下面各题的得数。0.878 87008 8.780 0.087800 696
7、08 696080 69.679897 899299 67396 12159 59405.53.5 214040214040 17 7 7 1 1 7.5 384 8 5 6 8 8 5 7 1 1 ( ) 45298 6 6 4 10 34906780 2.2134 5 1 1 1 1 2 6 4 6 8 4 2 1 1 1 17 2 5 5 3 8 2 3 19 19 3 1 3 4 1 ( ) 30 2 4 4 5 2 787.2967.51 41.623136 5 x 0.2 6 1x 36 3 x 11 1 65% x x 30 8 6 5 2 = : x = 6 : 0.4 4 8 16 8 = 5 : x = 1.25 :1.2 x 0.6 : 150 7 2 2 6 1 5 x x 8 1 1 0.4 5 3 = 2 5 0.6 x x 50 : x = 25 :3 6 9 662= 660420= 1340= 500531.8= 111= 20.5= 145 2 1 1 4 2 1 = 8 = 3 3 2 5 3 3 2 5.140.46= 5.730.18= 502= 484= 二、根据75876525,直接写出下面各题的得数。
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