999.9×2.6+333.3×1.2简便计算_数学解答

999.9×2.6+333.3×1.2简便计算

人气：347 ℃　时间：2020-02-05 23:51:55

解答

999.9×2.6+333.3×1.2
=333.3×3×2.6+333.3×1.2
=333.3×(7.8+1.2)
=333.3×9
=333.3×(10-1)
=3333-333.3
=2999.7