Question

计算下列各题，能简算的要简算？

101x4.9-4.9 1.65×4.3+8.35×4.3

Answer 1

101×4.9一4.9=（101一1）×4.9=100×4.9=490，
1.65×4.3十8.35×4.3=（1.65+8.35）×4.3=10×4.3=43

Answer 2

101×4.9-4.9=4.9×(101-1)=4.9×100=4901.65×4.3+8.35×4.3=4.3×(1.65+8.35)=4.3×10=43

Answer 3

101x4.9-4.9＝（101-1）×4.9＝100×4.9＝490
1.65×4.3+8.35×4.3＝（1.65+8.35）×4.3＝10×4.3＝43

Answer 4

101×4.9-4.9=4.9×(101-1)=4.9×100=490，
1.65×4.3+8.35×4.3
=4.3×(1.65+8.35)
=4.3×10=43

Answer 5

101×4.9-4.9
=101×4.9-4.9×1
=（101-1）×4.9
=100×4.9
=49
1.65×4.3+8.35×4.3
=（1.65+8.35）×4.3
=10×4.3
=43