importrandom分?jǐn)?shù)加減法練習(xí)題exercises=["1/4+3/4","5/62/6","3/8+1/8","7/125/12","2/3+1/3","9/103/10","4/5+2/5","6/72/7","3/4+1/2","5/61/3","7/8+1/8","4/92/9","1/2+2/3","3/41/4","5/6+2/6","7/123/12","2/3+3/4","5/81/8","9/10+1/10","6/73/7","3/5+2/5","4/9+1/9","7/12+1/12","8/152/15","1/3+2/3","5/83/8","11/12+1/12","6/113/11","7/10+3/10","4/72/7","3/5+4/5","8/91/9","5/6+1/6","7/81/8","2/3+1/2","9/101/10"]隨機(jī)選擇50道題selected_exercises=random.sample(exercises,50)selected_exercisesValueErrorTraceback(mostrecentcalllast)CellIn[1],line174exercises=[5"1/4+3/4","5/62/6","3/8+1/8","7/125/12",6"2/3+1/3","9/103/10","4/5+2/5","6/72/7",()13"5/6+1/6","7/81/8","2/3+1/2","9/101/10"14]16隨機(jī)選擇50道題>17selected_exercises=random.sample(exercises,50)18selected_exercisesFile/usr/local/lib/3.10/random.py:482,inRandom.sample(self,population,k,counts)480randbelow=self._randbelow481ifnot0<=k<=n:>482raiseValueError("Samplelargerthanpopulationorisnegative")483result=[None]k484setsize=21sizeofasmallsetminussizeofanemptylistValueError:Samplelargerthanpopulationorisnegative五年級(jí)分?jǐn)?shù)加減法口算練習(xí)50道（人教版）練習(xí)題1.1/4+3/42.5/62/63.3/8+1/84.7/125/125.2/3+1/36.9/103/107.4/5+2/58.6/72/79.3/4+1/210.5/61/311.7/8+1/812.4/92/913.1/2+2/314.3/41/415.5/6+2/616.7/123/1217.2/3+3/418.5/81/819.9/10+1/1020.6/73/721.3/5+2/522.4/9+1/923.7/12+1/1224.8/152/1525.1/3+2/326.5/83/827.11/12+1/1228.6/113/1129.7/10+3/1030.4/72/731.3/5+4/532.8/91/933.5/6+1/634.7/81/835.2/3+1/236.9/101/1037.3/4+1/438.5/61/639.7/12+1/1240.8/151/1541.2/3+2/342.5/8+3/843.11/121/1244.6/11+3/1145.7/103/1046.4/7+2/747.3/52/548.8/9+1/949.5/62/650.7/8+2/8解答提示同分母分?jǐn)?shù)加減法：直接將分子相加減，分母保持不變。異分母分?jǐn)?shù)加減法：先通分，將分?jǐn)?shù)化成同分母后，再進(jìn)行加減。計(jì)算結(jié)