Question

52点8×10点1-5点二八的简算

52点8×10点1-5点二八的简算

Answer 1

52.8×10.1-5.28
=5.28x（10x10.1-1）
=5.28x（101-1）
=5.28x100
=528
谢谢，请采纳

Answer 2

52.8x10.1-5.28
=52.8x10.1-52.8x0.1
=52.8x(10.1-0.1)
=52.8x10
=528

Answer 3

52.8x10.1-5.28
=5.28x101-5.28
=5.28x（101-1）
=5.28x100
=528

Answer 4

(50+2)╳(10+0.15)-5.28
=500+20+7.5+0.3-5-0.28
=527.5+0.02
=527.52

追答

更正
52.8ⅹ(10.l)-5.28
=5.28╳101-5.28
=5.28╳(101-1)
=5.28╳100
=528