3/4乘1/9加1/4除以九用簡便計算等於多少?

3/4x1/9+1/4÷9
=3/4x1/9+1/4x1/9
=(3/4+1/4)x1/9
=1x1/9
=1/9

9/20除以1/8除以3/5等於多少簡便計算?

9/20÷1/8÷3/5
=9/20×8×5/3
=3×2
=6

(1/4減1/4乘於99)除以25/24等於用簡便計算?

(1/4-1/4×99)÷25/24
=1/4×(1-99)×24/25
=1/4×(-98)×24/25
=-24.5×24/25
=-588/25

簡便計算9/20除以1/8除以3/5等於

9/20÷1/8÷3/5
=9/20×8×5/3
=3/4×8
=3×2
=6

括號3/4減掉1/15乘九除以3/4簡便計算

(3/4-1/15)×9÷3/4
=(3/4-1/15)×9×4/3
=(3/4-1/15)×12
=3/4×12-1/15×12
=9-4/5
=8+1/5
=8又1/5

8/17除以9 加1/9乘以9/14等於多少簡便計算

8/17除以9 加1/9乘以9/14等於多少簡便計算
8/17除以9 加1/9乘以9/14
=1/9*(8/17+9/17)
=1/9*1
=1/9

3/4乘58+58除以4-64乘1/4簡便計算

3/4乘58+58除以4-64乘1/4
=1/4*174+58*1/4-64*1/4
=1/4*(174+58-64)
=1/4*168
=42

3/4除以1/8加3/4乘以9/8加1/3等於多少

689/96

3/4加16/19加1/4減8/19等於多少簡便計算?

原式
=3/4+16/19+1/4-8/19
=(3/4+1/4)+(16/19-8/19)
=1+8/19
=1又8/19
供參考。

5/7除以1/4+5/7除以3/4 簡便計算

=5/7×4+5/7×4/3
=5/7×(4+4/3)
=5/7×16/3
=80/21

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