A simple algorithm of 1.6 times 7.8 times 1.25

A simple algorithm of 1.6 times 7.8 times 1.25

1.6 by 7.8 by 1.25
=2 by 0.8 by 7.8 by 1.25
=(2 times 7.8) times (0.8 times 1.25)
=15.6 times 1
=15.6

Use your favorite method to calculate. 5 / 8 △ 7 / 16 × 14 / 25
(5 / 6-7 / 12) × 12 (2 / 5 + 1 / 3) × 4 / 5 + 3 / 4

1、=（5/8）*（16/7）*（14/25）
=4/5
2、=5/6 *12-7/12 *12
=10-7=3
3、=2/5 *5/4+1/3 *5/4+3/4
=1/2+5/12+3/4
=20/12=5/3
I wish you progress in your study!

A simple algorithm: 1 / 5 △ [(2 / 3 + 1 / 5) × 1 / 13]

1. Simple calculation. 1:3.25 △ 2.5 △ 42:7.2 × 1.02 3:23 and 3 / 13-2:25-7 and 3 / 4
1. Simple calculation: 1:3.25 ／ 2.5 ／ 42:7.2 × 1.02 3:23 And 13:3-2:25-7 and 4:34:529 + 1 and 7:2 + 4.71 + 7:55:4 and 7:3 + 3 and 9:5 And 7:3 + 1 and 9:4 + 1 and 7:46.2005 × 0.64 + 2005 × 0.36

1.0.325
2.7.344
4.535.71
5.2 and 1-3 of 9
six point two zero zero five

13 and 13 2-2 and 4 1-7 and 4 3 =?

Original form
=13 and 2 / 13 - (2 and 1 / 4 + 7 and 3 / 4)
=2-10 out of 13
=3 and 2 / 13

Calculation: (- 35 3 / 4) * (1 4 / 7) + 10 1 / 2 * (- 13 6 / 7) + (- 25 1 / 4) * (- 1 4 / 7)

(- 143 / 4) * (11 / 7) + 11 / 2 * (- 97 / 7) + (- 101 / 4) * (- 11 / 7)
=(- 1573 of 28) + (- 2037 of 14) + 1111 of 28
=-4536 out of 28
=-162

How about 3 / 7 × 1 / 4 + 25% × 2 / 7 + 0.25 × 1 / 7

This is a problem of extracting common factor calculation. We don't need to multiply and add one by one. It is observed that 25% = 0.25 = 1 / 4
So this formula = 3 / 7 * 1 / 4 + 1 / 4 * 2 / 7 + 1 / 4 * 1 / 7 = 1 / 4 * (3 / 7 + 2 / 7 + 1 / 7) = 1 / 4 * 6 / 7 = 3 / 14

A simple algorithm of 12 / 13 times 9 plus 12 / 13 times 5 minus 2 / 13

12/13*(9+5-1)=12

How to write the simple algorithm of 478 minus 215 plus 22 minus 85?

478-215+22-85
=（478+22） -（215-85）
=500-300
=200

Simple algorithm of 13 / 15 * 11 / 4 + 14 / 5 * 11 / 4 + 11 / 4

13/15*11/4+14/5*11/4+11/4=(13/15+14/5+1)X11/4=70/15X11/4=77/6