Question

3/4-1/2括号乘以3/4+1/2括号简便演算法怎么算

Answer 1

3/4-1/2括号乘以3/4+1/2括号简便演算法怎么算

（3/4-1/2）乘以（3/4+1/2）
=（3/4）²-（1/2）²
=9/16-1/4
=5/16

括号6/5减去4/1乘以3/2反括号除以6/1的简便演算法

（5/6-1/4×2/3）÷1/6
=（5/6-1/6）×6
=5/6×6-1/6×6
=5-1
=4

括号1-0.8×3/4括号除以4/5简便演算法

（1-0.8×3/4)÷4/5
=1÷4/5-4/5x3/4÷4/5
=5/4-3/4
=2/4
=1/2

12×括号3/4-1/2+5/6括号简便计算

12x（3/4-1/2+5/6）
=12x3/4-12x1/2+12x5/6
=9-6+10
=13

9/4-括号3/4+2/3括号等于简便演算法

9/4-(3/4+2/3)
=9/4-3/4-2/3
=6/4-2/3
=3/2-2/3
=(3x3-2x2)/6
=5/6

括号2/17加3/8反括号乘以5.6的简便演算法是

(2/7+3/8)x5.6
=2/7x5.6+3/8x5.6
=1.6+2.1
=3.7

1/2-1/6+3/4括号乘以252的简便演算法

(1/2-1/6+3/4)x252
= 1/2 x252-1/6 x252+3/4x252
= 126 - 42 + 3x63
=84+189
= 273
谢谢，请采纳

（3/4-1/5）*（3/4+1/5）用简便演算法

(3/4-1/5)×(3/4+1/5)
=（3/4）²-（1/5）²
=9/16-1/25
=225/400-16/400
=209/400

十又3/4-括号3/4+2/5括起来的简便演算法

10又3/4-（3/4+2/5）
=（10又3/4-3/4）-2/5
=10-2/5
=9又3/5

2/3+4/9×括号3/4-1/2括回怎么做简便计算

2/3+4/9×（3/4-1/2）
=2/3+4/9×1/4
=2/3+1/9
=7/9
直接计算最简便