计算与简算
1.计算99987.5+87.5.
2.计算8080.125160016
3.计算3.49+4.47+3.51+2.38+4.53+2.62.
4.计算73206655555(43.20.8).
5.计算0.45-[10-(0.2+6.37O.7)]0.5.
6.计算0.035935+O.035+30.035+O.07610.5.
7.计算19.9837199.81.9+19980.82.
8.计算(8.42.5+9.7)(1.051.5+8.40.28)
9.计算26.25+73.750.35+0.6573.5.
10.计算1.1+1.3+1.5++9.9.
11.计算 32.14+64.28 0.53780.25+0.537864.280.75864.280.1250.5378
12.计算0.88812573+9993.
答案:
1. 87500
2. 1
3. 21
4. 0
5. 0.1
6. 35
7. 1998
8. 1(两个括号内分别计算)
9. 99.8375(分拆)
10. 247.5(455+2.59,分组)
11. 32.14
12. 11100(999=2737)