應用練習
計算下列各題并寫出簡算過程:
1.5.467+3.814+7.533+4.186
2.6.25×1.25×6.4
3.3.997+19.96+1.9998+199.7
4.0.1+0.3+…+0.9+0.11+0.13+0.15+…+0.97+0.99
5.199.9×19.98-199.8×19.97
6.23.75×3.987+6.013×92.07+6.832×39.87
*7.20042005×20052004-20042004×20052005
*8.(1+0.12+0.23)×(0.12+0.23+0.34)-(1+0.12+0.23+0.34)×(0.12+0.23)