Question

4.95×7.5+3.75×10.1的简便运算是什么？

Answer 1

这道题先用积不变的性质把7.5除以2得3.75，那么要使积不变4.95则要乘以2得9.9，然后再应用乘法分配律进行简便计算。4.95*7.5+3.75*10.1=（4.95*2）*（7.5/2）+3.75*10.1=9.9*3.75+3.75*10.1=3.75*（10.1+9.9）=3.75*20=75谢谢

Answer 2

4.95×7.5+3.75×10.1
＝4.95×7.5+3.75×5.05×2
＝4.95×7.5+7.5×5.05
＝7.5×（4.95+5.05）
＝7.5×10
＝75

Answer 3

4.95×7.5+3.75×10.1
=4.95×2×3.75+10.1×3.75
=9.9×3.75+10.1×3.75
=20×3.75
=75

Answer 4

=（5-0.05)×7.5+3.75×（10+0.1)
=5×7.5-0.05×7.5+3.75×10+3.75×0.1
=37.5-0.375+37.5+0.375
=37.5+37.5
=75

Answer 5

解，原式=4.95X7.5+3.75x(2x5.05) =4.95x7.5+(3.75x2)x5.05 =7.5X(4.95+5.05) =7.5X10 =75