51111798-50=— + — = — + — = 223765-40=1324860+390=— - — = 60% + — = 33316+20=4611950÷50=— × — = — + — = 375558+0.1=410.4×0.8=3 - — = 5 × — =359.1÷0.7= 5562.28-0.78=— + — = 7 + — = 665326-19=41441.3×0.7=— × — = — ÷ — = 32559.9÷0.09= 3690 ÷ 18 + 92 × 7 80%x - 14 = 55
6.5 + 8.7 + 3.5 + 1.3 25 × 32 × 0.125
2 : x = 10 : 6.1 4x + 0.5×9 = 8.5
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