分析:(1)根據(jù)運算順序計算,先算小括號里,再算括號外的乘法,最后算加法;
(2)根據(jù)運算順序計算,先算小括號里,再算中括號里的,最后算括號外的;
(3)先計算出0.6×0.6,再運用減法的性質(zhì)簡便計算;
(4)先計算小括號里的,再計算中括號里的乘法,再運用減法的性質(zhì)簡便計算;
(5)先算小括號里的,再運用乘法分配律簡便計算;
(6)將16寫成2×8,再將0.125與8結(jié)合進行簡便運算;
(7)按照運算順序計算即可;
(8)先計算小括號里的除法,再運用減法的性質(zhì)簡便計算中括號里的數(shù),最后計算括號外的.
解答:解:(1)6.5×(10-3.7)+2.98,
=6.5×6.3+2.98,
=40.95+2.98,
=43.93;
(2)[4.75+8.4÷(9.2-6.8)]×40,
=[4.75+8.4÷2.4]×40,
=8.25×40,
=330;
(3)19.8-0.6×0.6-0.64,
=19.8-(0.36+0.64),
=19.8-1,
=18.8;
(4)12.773-[4.5×(0.75-0.356)+9.23],
=12.773-[4.5×0.394+9.23],
=12.773-1.773-9.23,
=11-9.23,
=1.77;
(5)2.48×(7.3-5.8)+1.5×7.52,
=2.48×1.5+1.5×7.52,
=1.5×(2.48+7.52),
=1.5×10,
=15;
(6)0.125×7.9×16,
=0.125×7.9×(2×8),
=0.125×8×7.9×2,
=1×7.9×2,
=15.8;
(7)(6.4+0.88)÷0.8+3.2×1.25,
=7.28÷0.8+3.2×1.25,
=9.1+4,
=13.1;
(8)24-[5.4+(0.6+1.38÷0.23)],
=24-[5.4+(0.6+6)],
=24-[5.4+0.6+6],
=24-12,
=12.
點評:解決本題要認真分析數(shù)據(jù),再選擇適合的方法計算即可.