小学数学计算题(用简便方法计算)
问题描述:
小学数学计算题(用简便方法计算)
12.54+3.66+6.34 8.37-6.74+2.26 5.93+2.86-1.93 18.2-6.54-1.46 19.6-5.9-9.6 12.94-3.68-6.32 20.18-(10.18-9.39) 32.92-(9.73+22.92) 12.68-3.67+3.32-1.33 59.18-16.8-3.2-9.18 46.03-5.95-6.05+10.97
答
12.54+3.66+6.34 =12.54+(3.66+6.34)=12.54+10=22.548.37-6.74+2.26=8.37-7+0.26+2.26=1.37+3.52=4.875.93+2.86-1.93=5.93-1.93+2.86=4+2.86=6.8618.2-6.54-1.46=18.2-(6.54+1.46)=18.2-8=10.219.6-5.9-9.6=...