2025秋五年級上冊數(shù)學小數(shù)簡便計算練習0.11×1.8＋8.2×0.11＝0.11×（1.8＋8.2）＝0.11×10＝1.12.34×99＋2.34＝2.34×（99＋1）＝2.34×100＝234132×101＝132×（100＋1）＝132×100＋132＝133326.25÷1.25÷0.8＝6.25÷（1.25×0.8）＝6.25÷1＝6.252.5×16＝（2.5×4）×4＝10×4＝406.33×101﹣6.33＝6.33×（101﹣1）＝6.33×100＝6331.56×1.7＋0.44×1.7＝1.7×（1.56＋0.44）＝1.7×2＝3.40.125×32×2.5＝（0.125×8）×（4×2.5）＝1×10＝101.258×18.5﹣0.258×18.5＝18.5×（1.258﹣0.258）＝18.5×1＝18.51.25×2.4＝1.25×8×0.3＝10×0.3＝32025秋五年級上冊數(shù)學小數(shù)簡便計算練習17.17﹣6.8﹣3.2﹣6.17＝（17.17﹣6.17）﹣（6.8＋3.2）＝11﹣10＝116.8×10.1＝16.8×10＋16.8×0.1＝168＋1.68＝169.681.25×3.2×0.25＝（1.25×0.8）×（4×0.25）＝1×1＝11.36＋4.85＋2.64＋6.15＝（1.36＋2.64）＋（4.85＋6.15）＝4＋11＝1598.5÷2.5÷4＝98.5÷（2.5×4）＝98.5÷10＝9.8583.7﹣12.83﹣0.17＝83.7﹣（12.83＋0.17）＝83.7﹣13＝70.716.2×4.5＋3.8×4.5＝（16.2＋3.8）×4.5＝20×4.5＝909.05﹣3.86﹣3.14＝9.05﹣（3.86＋3.14）＝9.05﹣7＝2.0517.17﹣6.8﹣3.2＝17.17﹣（6.8＋3.2）＝17.17﹣10＝7.175.29×9＋5.29＝5.29×（9＋1）＝5.29×10＝52.92025秋五年級上冊數(shù)學小數(shù)簡便計算練習16.8×10.1＝16.8×10＋16.8×0.1＝168＋1.68＝169.683.75×25＋6.25×25＝25×（3.75＋6.25）＝25×10＝25025.46﹣8.23﹣1.76＝25.46﹣（8.23＋1.76）＝25.46﹣9.99＝15.451.25×32×0.25＝（1.25×8）×（4×0.25）＝10×1＝10.25×3.2×1.25＝0.25×4×0.8×1.25＝（0.25×4）×（0.8×1.25）＝1×1＝19.99×1.01＝（10﹣0.01）×1.01＝10.1﹣0.0101＝10.089917.5÷0.8÷12.5＝17.5÷（0.8×12.5）＝17.5÷1＝17.52.9×99＋2.9＝（99＋1）×2.9＝100×2.9＝29023.25﹣6.75﹣3.25＝23.25﹣（6.75＋3.25）＝23.25