我是计算高手.(用竖式计算)
计算,能简算的要简算.43× ×+÷ 2﹣÷﹣+÷ ÷×0.64 (0.75﹣)×(+)
能简算的要简算1.2﹣0.5×1.8÷0.9 8×7×1.25 ×8.8+1.2×+60% [15×(50%+)]÷.
用递等式计算(1)×÷ (2)÷×10 (3)÷×12 (4)(+﹣)×36.
13×4÷13×4= += 28﹣﹣= ( +﹣)×30=﹣= 100÷0.01= 2÷1+2×= =××= 6.54﹣2.8﹣1.2=
计算,能简算的要简算:(1)1÷4÷8÷0.25÷12.5 (2)9.75﹣5.42﹣(0.25+2.58)(3)8×2.7+6.2×1.4+3.5×8.6 (4)[+(20﹣4.7)×6]÷102.2.