Simple calculation | 1 * 2 / 1 + 2 * 3 / 1 + 3 * 4 / 1 +. 24 * 25 / 1

Simple calculation | 1 * 2 / 1 + 2 * 3 / 1 + 3 * 4 / 1 +. 24 * 25 / 1

1 / 1x2 is written here as 1 / 1x2, the rest is the same
1/1x2+1/2x3+1/3x4+...+1/24x25
=1-1/2+1/2+1/3+1/3-1/4+...+1/24-1/25
=1-1/25
=24/25
If you don't understand this question, you can ask,

0.1 + 0.1 + 0.3 + 0.4 +. + 0.8 + 0.9 + 1 =? Simple calculation

0.1+0.1+0.3+0.4+.+0.8+0.9+1=0.1+0.2+0.3+0.4+.+0.8+0.9+1-0.1=（0.1+1）x5-0.1=5.4

0.8:1 / 2 ratio, calculate the ratio

4/5:1/2
=(4/5*10):(1/2*10)
=8:5
The ratio is 8 / 5

The ratio of 3 decimeter to 3 / 8 meter

What's the 39:13 ratio

It should be 3 to 1
Please accept

15:4 / 5, 13:39, 125 / 25

0.15:(4/5)=15/100*5/4=3/16
13:39=13*1/39=1/3
125/25=5

What is the ratio of 3 in 10 to 7 in 15

3/10 ：7/15 = 9/30 ：14/30 = 9 ：14

What's the ratio of 10 molecule 3 to 15 molecule 4

2/3:2=2/3*2/1=1/3

The ratio is 15:20 and 2.5:10

Calculate the ratio 3 / 2:15 54:45 90 / 105 3 / 8:9 / 10
Simplification ratio
4 / 0.05 1.32:3.33 1 / 2:1 / 16 1 / 3:90

Ratio 3 / 2:15 = 1 / 10
54 ：45 =6/5
90/105=6/7
3/8 : 9/10=5/12
Simplification ratio
4/0.05=80:1
1.32 ：3.33=44:111
1/2 ：1/16=8:1
1 / 3: 90 = 2:9