简便方法:请用奥数解下面各题:
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/17 15:48:14
简便方法:请用奥数解下面各题:
1÷32÷0.05÷0.25÷0.5 0.25×5.6+2.25×3.6
1.25×5.6+2.25×3.6
1÷32÷0.05÷0.25÷0.5 0.25×5.6+2.25×3.6
1.25×5.6+2.25×3.6
![简便方法:请用奥数解下面各题:](/uploads/image/z/17892896-32-6.jpg?t=%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%EF%BC%9A%E8%AF%B7%E7%94%A8%E5%A5%A5%E6%95%B0%E8%A7%A3%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%EF%BC%9A)
1÷32÷0.05÷0.25÷0.5
=1÷(2×4×4×0.05×0.25×0.5)
=1÷[(2×0.05)×(4×0.25)×(4×0.5)]
=1÷(0.1×1×2)
=1÷0.2
=5
0.25×5.6+2.25×3.6
=0.25×4×1.4+2×3.6+0.25×3.6
=1.4+7.2+0.25×4×0.9
=8.6+0.9
=9.5
1.25×5.6+2.25×3.6
=1.25×0.8×7+2.25×4×0.9
=1×7+9×0.9
=7+8.1
=15.1
=1÷(2×4×4×0.05×0.25×0.5)
=1÷[(2×0.05)×(4×0.25)×(4×0.5)]
=1÷(0.1×1×2)
=1÷0.2
=5
0.25×5.6+2.25×3.6
=0.25×4×1.4+2×3.6+0.25×3.6
=1.4+7.2+0.25×4×0.9
=8.6+0.9
=9.5
1.25×5.6+2.25×3.6
=1.25×0.8×7+2.25×4×0.9
=1×7+9×0.9
=7+8.1
=15.1