64×2.5×0.125 3×0.8+3×2.2 3.76÷0.4÷2.5
(14.21+3.5)÷7 4.66×0.28+4.66×0.82﹣4.66 2.4+57.6÷36.
用递等式计算:(能简算的要简算)
(1)21.36÷0.8﹣12.9 (2)15.4×103﹣1.54×30
(3)29.61÷9.4×1.4 (4)(16.2﹣0.54)÷1.8.
直接写出得数.
0.001+10.099= 100﹣0.19= 3.9×0.01= 0.22=
0.5+0.5÷0.5= 32.5÷(2.5×0.4)= 3×3÷3×3= 3.16÷0.1÷0.1=
①8(2x+2.6)=32
②1.25×3.2×2.5
③4.6×2.89+6.11×4.6+4.6
④1995×1995+1994×1994﹣1995×1994﹣1994×1993.
计算下面各题,能简便的要写出简便运算过程.
①0.75×2.8+0.75×7.2
②1.01×101﹣1.01
③40.4×2.5
④45.8﹣2.72÷0.8×12.5
⑤(2.83+7.17)÷(1﹣0.9)
脱式计算.你是最棒的!
6.5×8+3.5×8﹣44 8.5+(5.6﹣4.8)×13 1.9﹣1.9×(1.9﹣1.9)
×29+×29+29 1×÷× ×101﹣
49.5×﹣(50﹣)×0.6 ×+÷+ ÷[×(1﹣)]
897×﹣37.5%+104×0.375 [+×(﹣0.375)]÷ ++++
﹣(+)
1+12.7+5.9+17.3 270﹣42.5﹣17.5 125×88 130÷25÷4
25×32×125 125×103﹣125×3 22.4×25﹣25×2.4.
试题篮
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