Question

3/4乘1/9加1/4除以九用简便计算等于多少？

Answer 1

3/4乘1/9加1/4除以九用简便计算等于多少？

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等于多少简便计算？

9/20÷1/8÷3/5
=9/20×8×5/3
=3×2
=6

(1/4减1/4乘于99)除以25/24等于用简便计算？

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

简便计算9/20除以1/8除以3/5等于

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

括号3/4减掉1/15乘九除以3/4简便计算

(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等于多少简便计算

8/17除以9 加1/9乘以9/14等于多少简便计算
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简便计算

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等于多少

689/96

3/4加16/19加1/4减8/19等于多少简便计算?

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
供参考。

5/7除以1/4+5/7除以3/4 简便计算

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