1、702940,直接写出下面各题的得数。0.4270 4200.7 4.27000 0.4270000 29.47 294000.7 2940.7 2940070 三、估算。702102 901396 63301 18491 四、计算。5483.73.5 44200.0344200.03 7 8 5 1 1 4.5 144 ( ) 4 5 6 8 3 6 8 1 1 ( ) 34599 5 7 6 8 2384494 24.68.1 8 4 1 1 1 4 7 5 3 6 2 1 8 1 1 2 1 16 16 2 9 4 5 3 3 12 1 2 7 3 ( ) 48 11 3 3 6 4 4
2、950504.24 55.645123 8154= 860260= 650= 25050= 210.2= 533= 7.20.9= 460%= 11 1 1 1 9 5 1 = 5 = 6 6 3 2 8 6 7 5.772.51= 5.041.95= 1.2532= 987= 二、根据53462438,直接写出下面各题的得数。53046 53004.6 53460 0.053460 243.846 2438046 2438460 243804600 703401 898201 58198 27427 33.74.54.8 9.04809.0480 6 4 6 1 1 3.5 125 5 5
3、5 5 5 3 7 1 1 ( ) 6998 4 6 4 8 17385.53 8.225 6 1 1 1 3 8 7 3 7 2 4 1 8 1 3 5 14 14 14 2 9 2 4 19 19 25 1 4 4 3 60 17 5 5 5 4 550505.68 4720193 6248= 780550= 1710= 3010= 352.9= 336= 0.50.5= 4220%= 13 1 3 1 8 4 1 = 8 = = 7 7 5 6 7 3 7 5.121.42= 5.31.61= 1.254= 35= 二、根据87998613,直接写出下面各题的得数。8.7990 8.70
4、.99 870099 870009900 861.39.9 86130990 861300703403 796297 93396 23883 68.71.31.6 23500.823500.8 13 6 8 1 1 1.5 84 7 5 7 3 4 6 6 1 1 ( ) 26299 5 5 6 6 338770.8 37.550 9 1 1 1 5 6 8 5 2 4 6 2 7 3 1 1 1 23 23 3 8 4 5 2 2 5 1 7 6 1 15 3 8 8 5 3 15.6787.5 76.547107 738= 920470= 1920= 80750.3= 944= 3.60.4= 2430%= 17 7 1 7 4 3 4 = 1 = 8 8 3 6 5 4 3 6.521.87= 5.052.95= 1.2532= 30