45X21-50X2.1简便运算
45乘21减50乘2.1简便计算怎么做 -
45*21-50*2.1 =45*21-5*21 =21(45-5)21*40 =840
您好:45x21-50x2.1 = 45x21-5x21 =(45-5)x21 =40x21 =840 如果本题有什么不明白可以追问,请及时点击右下角的【采纳为满意回答】按钮如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢。祝学习进步!
45*21-50*2.1 =45*21-5*21 =21(45-5)21*40 =840
您好:45x21-50x2.1 = 45x21-5x21 =(45-5)x21 =40x21 =840 如果本题有什么不明白可以追问,请及时点击右下角的【采纳为满意回答】按钮如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢。祝学习进步!
45x21-50x2.1=45x21-5x21=(45-5)x21=40x21=840
45X21一50X2.1 =45X21一5X21 =(45-5)×21 =40×21 =840
29x1.9 1.9x21 50x1.9,用简便计算怎么算? -
29×1.9+1.9×21+50×1.9 =1.9×(29+21+50)=1.9×100 =190
45x21-50x2.1 = 45x21-5x21 =(45-5)x21 =40x21 =840 如果本题有什么不明白可以追问,请及时点击右下角的【采纳为满意回答】按钮,
45x21-50x2.1用简便运算 -
您好:45x21-50x2.1 = 45x21-5x21 =(45-5)x21 =40x21 =840 如果本题有什么不明白可以追问,请及时点击右下角的【采纳为满意回答】按钮如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢。祝学习进步!
1、2x50x125x8 =100x1000 =100000 2、125x8x8x5 =1000x40 =40000 3、25x21x5x4 =25x4x21x5 =100x105 =10500 4、20x40x25x17 =20x17x40x25 =340x1000 =340000