整數小數四則運算一：計算下面各題。20-824 420（13+57）90 6638-987211964+5612 1650-364 （13+47）（52-18） 95（64-45） （58+37）（64-95） 120-36418+35 二：先說出他們的運算順序，再計算。7.50.261.742.5 0.25134 189.3320.125 0.4（3.20.8）1.2 7.41.34.680.982.340.50.811.2 (90.45)(2.51.53) 213.60.80.3 16.65.5 1.7 三、簡便計算下面各題。8999+89 5215-552 55102 8932+8968 12564 4525+7545 23.5-2.8-7.2 5599 58.65-(3.2+8.65) 991258 3200254 250844412-88 12524 0.134+2.66+0.866 7.54.96.5 3.070.381.62 1.293.72.716.3 82.451.557.60.80.27.6 0.85199 0.258.54 1.288.60.728.6 12.50.960.8 10.49.60.350.8（4.31.25） 3.123.1299 28.610128.6147.322.68 2.648.677.3611.33 2.311.20.5（2.50.25）0.4 9.161.50.59.16 3.63.60.5四、計算，有些能簡便的要簡便計算：3313-99 8752+8748 6.81-4.4+5.19 1252465+320（20-15） 860-（48+12）12 （750+240）（0.3100）25（40+4） 24.56-(8.2+4.56) 8899+88 20.5-6.3-3.7（4.236.17）0.8 0.8615.70.8614.7 2.4102五年級簡便計算練習題4.58-(2.58+1.5) 2.30.250.4 0.1253.20.25 3.81.013.729.9+3.720.1 0.990.81+0.990.19+0.99 1.3925-0.039250 （4.16+4.16+4.16+4.16）2.5（2.5-0.25）0.4 3.7899+3.78 65（0.654）4.9+0.1-4.9+0.1 5.52-（3.52-0.72）2.60.5+7.42 42.2103 8.3991.2520.374 1.258-0.02580 （2.31+6.69）0.03 35.20.250.4 3.610.16.81+6.8199 0.2518540 3.94+34.30.2 2.08(9.62.4)4.8 10-1.8-7.2 0.43+3.57 0.90.8 7.2899+7.28 4.3500.299990.78+33330.66 (3.60.751.2)(1.5240.18) 16.129916.12 5.20.90.97.2899+7.28 4.3500.2 642.640.5 2615.715.724 (2.275 0.625)0.28 (1.250.125)8 4.8100.1 7.0910.80.87.09 9.599 13.50.98 12.58.8 1024.5 5.60.25 8（201.25） 用簡便方法計算0.250.28 0.1253.22.5 3540.2 3.59.9 3.599+3.5 3.5101-3.5 4.9+0.1-4.9+0.15.52-（3.52-0.72）2.60.5+7.4242.2103 8.3991.2520.3741.258-0.02580（2.31+6.69）0.03 35.20.250.4 3.610.16.81+6.8199 0.2518540 3.94+34.30.2 2.08(9.62.4)4.8 10-1.8-7.2 0.43+3.57 0.90.8 7.2899+7.28 4.3500.299990.78+33330.66 (3.60.751.2)(1.5240.18)16.129916.12 5.20.90.97.2899+7.28 4.3500.2 642.640.5 2615.715.724 (2.275 0.6