递等式能巧算的要巧算 120*4*0.25*0.7 5.1*75-49*7.5-1 (20+9.744/2.4)*0.5
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/19 07:26:21
递等式能巧算的要巧算 120*4*0.25*0.7 5.1*75-49*7.5-1 (20+9.744/2.4)*0.5-1.93
120*4*0.25*0.7
=120*0.7*4*0.25
=84*1
=84
5.1*75-49*7.5-1
=5.1*75-4.9*75-1
=75*(5.1-4.9)-1
=75*0.2-1
=15-1
=14
(20+9.744/2.4)*0.5-1.93
=(20+4.06)*0.5-1.93
=20*0.5+4.06*0.5-1.93
=10+2.03-1.93
=10+0.1
=10.1
=120*0.7*4*0.25
=84*1
=84
5.1*75-49*7.5-1
=5.1*75-4.9*75-1
=75*(5.1-4.9)-1
=75*0.2-1
=15-1
=14
(20+9.744/2.4)*0.5-1.93
=(20+4.06)*0.5-1.93
=20*0.5+4.06*0.5-1.93
=10+2.03-1.93
=10+0.1
=10.1
递等式能巧算的要巧算 120*4*0.25*0.7 5.1*75-49*7.5-1 (20+9.744/2.4)*0.5
递等式能巧算的要巧算 0.49[1/(4.9-4.89)]+6 38.2*7.5+75+0.75*518
递等式计算(能巧算的要巧算)
求教数学题,递等式计算,能巧算的要巧算
小学四年级递等式计算(能巧算的要巧算)急!
递等式计算能巧算的要巧算 0.8*(4-3.75)/0.1 4.8*1.25*0.25 9.5*4.8-4.8*5 14
67×25+33×45-33×20递等式计算,能巧算的要巧算
51×7.5-49×7.5-1 递等式计算
递等式计算,能巧算的就巧算:
求小数递等式,要巧算的
递等式计算要巧算的哦
递等式计算(能简算的要简算):75×1/4+25×25%