- 简便计算.(1)37.9×94+37.9×7-37.9.(2)8888×1111+4444×7778.
- 计算.0-0.1+0.2-0.3+0.4-0.5+0.6-…-201.1+201.2.
- 简便计算.0.7777×0.7+0.1111×5.1=______.
- 已知a=0.00…01990个044,b=0.00…01992个03,则a+b=______,a×b=______.
- 69316.931÷69.31=______.
- 计算(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
- 求:0.1•2+0.2•3+0.3•4+0.4•5+0.5•6+0.6•7+0.7•8+0.8•9.
- 计算2.5×7.5+1.3×7.5+45×0.75=______.
- 计算.(1+1.2+1.23+1.234)×(1.2+1.23+1.234+1.2345)-(1+1.2+1.23+1.234+1.2345)×(1.2+1.23+1.234)
- 2011.2011÷2.011×201.1=______.
- 0.3+0.03+0.003+…0.6+0.06+0.006+….
- 2006+200.6+20.06+2.006+994+99.4+9.94+0.994=______.
- 计算下面各题:(1)20.02×67+3.2×200.2+400.4×0.05(2)13+115+135+163+199.
- (1)8.25+[2.85-(325-10.8×29)÷1114](2)14×(4.85÷518-3.6+6.15×335)+[5.5-1.75×(123+1921)](3)1+2+3+4+…+99+100+9...
- a=0.3+0.33+0.333+…+0.33…3问a的千分位上的数字是什么?______.