用简便方法计算 (1)1÷32÷0.05÷0.25÷0.5 (2)1/25×5.6+2.25×3.用简便方法计算(1)1÷32÷0.05÷0.25÷0.5(2)1/25×5.6+2.25×3.6
问题描述:
用简便方法计算 (1)1÷32÷0.05÷0.25÷0.5 (2)1/25×5.6+2.25×3.
用简便方法计算
(1)1÷32÷0.05÷0.25÷0.5
(2)1/25×5.6+2.25×3.6
答
1÷32÷0.05÷0.25÷0.5=1÷(32×0.05×0.25×0.5)=1÷(2×0.05×4×0.25×4×0.5)=1÷(0.1×1×2)=1÷0.2=51/25×5.6+2.25×3.6=1.25×(8×0.7)+2.25×(4×0.9)=1.25×8×0.7+2.25×4×0.9=10×0.7+9×0...