①4.68+14.79+5.32-10.79,
=(4.68+5.32)+(14.79-10.79),
=10+4,
=14;
②2.5×(6.8+6.8+6.8+6.8),
=2.5×(6.8×4),
=2.5×6.8×4,
=(2.5×4)×6.8,
=10×6.8,
=68;
③475+238-147×3,
=475+238-441,
=713-441,
=272;
④49.8+42÷15×4.5,
=49.8+2.8×4.5,
=49.8+12.6,
=62.4;
⑤0.5×[21.2÷(4.5+80%)],
=0.5×[21.2÷5.3],
=0.5×4,
=2;
⑥[(
7
9 +
1
3 )÷
8
15 ]×
3
10 ,
=[
10
9 ×
15
8 ]×
3
10 ,
=
10
9 ×
15
8 ×
3
10 ,
=
5
8 .