- 2.005×390-20.05×41+200.5×0.2.
- 168.54+368.54+568.54+768.54+968.54=______.
- 能简算的要简算(1)186×101-186= (2)6.75×3.9+3. 25×3.9=(3)415 -176 - 24= (4)463-187+137-113=(5)25× 8÷25 ×4=(6...
- 计算下列各题。(能用简便方法的要用简便方法计算)(1)2010+210÷15(2)1.25×0.25×32(3)7.5×1.8+2.5(4)(5)(6)
- 脱式计算。(1)710-18×4(2)3.68-0.82-0.18(3)135×(1+)
- 计算下面各题。(怎样简便就怎样算)(1)(540-250)×26(2)2.5×32×1.25(3)(4)
- 整数加法的交换律、结合律对小数加法同样适用。[ ]
- 简便计算。(1)(2)(3)2.5×32×12.5(4)3.4×5.6+5.6×6.6(5)10.2 ×43
- 计算下面各题(能简算的要简算)。(1)139+298(2)7.45-2.83+2.55-2.17(3)1000-540÷18×2.4(4)24×(+-)(5)×+(6)÷[-...
- 3-5+7-9+11-13…+1995-1997+1999=______.0.00…0963个0181×0.00…01028个011=______.
- 怎样简便就怎样算。(1)6.3+10.5+0.7(2)50.5-6.64-3.36(3)8.36+(9.7-2.36)(4)2.8+3.05+2.2+0.95(5)9.15-(1.15-0....
- 脱式计算。(能简算的要简算)(1)0.36+0.545+0.45 (2)8.3-0.46-1.237 (3)23.4-5.85-4.15 (4)39.7+ 20.43+ 0.3+ 9.5...
- 计算:2009×0.23+34×20.09+4.3×200.9=______.
- 232.14+64.28×0.5378×0.25+0.5378×64.28×0.75-8×64.28×0.125×0.5378=______.
- 计算10.37×3.4+1.7×19.26=______.