簡便計算【11+10/1】*11

簡便計算【11+10/1】*11


【11+1/10】*11
=【11+0.1】*11
=11.1*(10+1)
=111+11.1
=122.1



簡便計算7/11×1/7×10/7×7/11


7/11×1/7×10/7×7/11
=1/11×10/11
=10/121



5又5/9÷10/11+3又4/9×1.1簡便運算


5又5/9÷10/11+3又4/9×1.1
=5又5/9x11/10+3又4/9×1.1
=5又5/9x1.1+3又4/9×1.1
=1.1x(50/9+31/9)
=1.1x81/9
=1.1x9
=9.9



7分之10-11分之4-11分之7簡便計算


7分之10-11分之4-11分之7
=7分之10-(11分之4+11分之7)
=7分之10-1
=7分之3