tolong di jawab ya... saya kurang paham... san tolong jawabannya lengkap...

1). 34,57 + 0,456
= 35,026
2).3¼ + 5 3/5 + 1½
=13/4 + 28/5 + 3/2
=65/20 + 112/20 + 30/20
=177/20+30/20
=207/20
=sepuluh 2/7
3).8 1/5 - 3½
=41/5 - 7/2
=82/10 - 35/10
=47/10
= empat 7/10
4)3¾ × 1 ⅓
=15/4 × 4/3
=60/12
=5
5).4½ : 1½
=9/2 : 3/2
=18/6
=3
6).40.000:100 = 400
=1%=400
=20% × 400 = 8000
harga baju selah diskon
=40000-8000
=32000
7).gak keliatan soalnya
8).
9).²√784
=28
10).³√17576
= 26