学习必备欢迎下载四年级整数简便运算姓名:38×25×425×12(40+8)×2536×34+36×66325×113-325×1378×10235×99125×8125×3956+56×9975×101-75355-160-140645-(180+245)375-(175-123)170÷25÷4260÷(13×5)学习必备欢迎下载四年级简便运算:姓名:42×125×8125×32125×(8+80)75×23+23×2528×18-8×2856×10125×4145×98125×7983+83×9999×99+99125×81-12591×31-91452-230-170162-(54+62)256-(156-78)630÷18÷5180÷(9×4)学习必备欢迎下载整数简便运算推广到小数:姓名:4.2×0.125×80.25×3.22.5×(0.4+8)0.75×2.3+2.3×0.252.8×18-8×2.85.6×1.010.25×4.10.45×9.812.5×0.790.83+0.83×999.9×99+9.91.25×81-1.250.91×31-0.914.52-0.23-0.171.62-(0.54+0.62)2.56-(1.56-0.78)6.3÷1.8÷0.5学习必备欢迎下载整数简便运算推广到分数位姓名:53×61×5(101+41)×4(98+274)×2786×85392-167×9221×151+31×2165×95+95×6175×95+75995×98+995415×4243×(4-32)83+87×7127×6+125×63114×23+3117×23