80%×0.25﹣60%÷4 120%X﹣X=0.81.2×85+16×﹣120% :4=X:4.8×3.9+6.1×4 =.
脱式计算,能简算的要简算.1.21×42﹣(4.46+0.14) 371×100.1 4.44×25(0.75+0.2)÷0.25×250% 2006×2006﹣2005×2005.
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=