(1)0.16+14.95+5.84 =(0.16+5.84)+14.95 =6+14.95 =20.95 (2)1.59+3.3-0.59+6.7 =(1.59-0.59)+(3.3+6.7) =1+10 =11 (3)7.02-4.5+0.98 =(7.02+0.98)-4.5 =8-4.5