1、9.566 7 6 8 1 1 8.5 336 ( ) 6 5 7 8 6 2 5 1 1 ( ) 94501 3 4 6 6 313.9302 6.0299 9 2 7 1 5 6 8 3 6 5 6 1 9 2 1 4 9 50 50 3 10 3 3 13 13 5 1 7 6 1 ( ) 45 3 8 8 5 3 133.58968.2 40.74395 四、解方程。 8 x 0.8 4 100x 52 7 x 3 1 50% x x 6 7 2 3 1 1 x : 4 = : 0.3 : x = 0.6 : 0.7 5 7 20 8 = 0.2 : x = 0.05 : 5 6 x
2、5 0.8 : 0.9 = x : 0.2 : x = 0.3 : 120 4 2 2 5 1 = = 3 x x 3 1 1 1.4 2 = : 3 = 5 7 1.2 x 1 1 1 : x 20 : x = 10 : 6 3 7 5 946= 850490= 1550= 78060= 292.8= 739= 1.40.2= 1830%= 17 7 1 1 1 6 1 = 9 = 8 8 2 8 5 7 4 6.272.96= 5.32.04= 0.516= 480二、根据88464048,直接写出下面各题的得数。88000.46 0.88460 8.846 88000.46 404800
3、460 40480046 404804600 803303 798296 63297 24852 5613.43.2 9976099760 9 2 3 1 1 2.5 60 ( ) 5 5 4 3 5 8 4 1 1 ( ) 42899 7 3 4 6 87394.06 1610.43 7 1 9 1 1 9 6 2 8 4 5 1 1 1 4 3 2 7 7 2 7 4 5 5 5 29 1 1 4 1 ( ) 15 17 2 2 5 3 176221560 81.740293 5 x 0.2 2 5x 26 2 x 15 1 35% x x 32 4 8 4 5 : 100 4 9 16
4、7 = 8 : x = 2 :3.6 x 9 0.1 : 0.6 = x : 8 : x = 3 : 1.2 8 2 8 7 1 3 1 2 9 4 = 2 3 0.4 x x 7 : x = 3.5 : 3 2 9 8 6821= 980540= 1250= 28040= 392.3= 719= 3.60.6= 2640%= 5 1 1 1 1 1 3 = 3 = = 3 3 2 4 8 2 2 5.691.68= 6.351.31= 2.564= 3.66= 二、根据63483024,直接写出下面各题的得数。6.348 6.34800 6.30.48 30240480 3024000.48
5、 30240.48 302.4480 801301 70197 54103 30353 46804.34.6 1.211.21 4 9 6 1 1 6.5 224 3 5 7 8 4 6 5 1 1 ( ) 71401 5 4 4 8 638.64.34 2613.6 7 1 5 1 7 6 2 6 2 8 4 1 3 1 3 4 11 11 5 8 4 2 7 7 22 1 2 7 1 48 13 3 3 8 2 12.45157.41 70.442129 x 0.3 7 0.8x 40 x 13 2 15% x x 18 3 6 3 5 = : 70 : x = 7 : 0.6 2 8 6
6、 7 4 4 x 7 2 : 8 = x : 2 : x = 30 : 180 6 6 7 4 1 7 x x 2 7 3 0.4 2 9 = 8 2 1.8 x x 0.8 : x = 0.4 :5 7 2 613= 90060= 1850= 70050= 451.5= 234= 4.50.9= 425%= 7 1 1 1 4 9 7 = 5 = 6 6 3 5 3 8 6 6.271.84= 5.532.38= 54= 153= 二、根据1458812,直接写出下面各题的得数。0.14580 145.8 1458 14000.58 8125.8 81.25.8 8120580 8.1258
7、0 603301 603401 6997 24479 6101.13.4 9.230.59.230.5 15 3 4 1 1 0.5 210 8 5 5 7 6 3 9 1 1 ( ) 87201 4 8 2 8 75.66659 2910.34 9 1 4 1 7 8 5 5 2 8 1 7 3 1 1 1 16 16 2 8 4 4 2 2 6 1 4 4 1 40 5 5 5 5 4 7.4822270 44.43881 x 0.9 3 2x 22 3 x 8 1 80% x x 35 8 7 5 10 = : x = 90 : 3 8 10 9 = 0.7 : x = 0.175 :9 : 50 = x : 40 : x = 0.9 : 18 2 7 7 1 3 x x 4 1 8 1.2 7 8 = 2 7 0.4 x x 40 : x = 20 : 9 4 7 7 7346= 790120= 350= 77070= 110.6= 438= 4.80.8= 3650%= 7 1 1 1 6 1 1 = 9 = 3 3 2 3 5 7 6 5.831.65= 5.531.92= 0.58= 300二、根据65362340,直接写出下面各题的得数。
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