Question

(1/20+0,125):2 1/2+0,43=?

Answer 1

( 1/20 + 0,125) ÷ 2 1/2 + 0,43 = 0,5
1) 1/20 + 0,125 = 0,05 + 0,125 = 0,175
2) 0,175 ÷ 2 1/2 = 0,175 ÷ 5/2 = 0,175 ÷ 2,5 = 0,07
3) 0,07 + 0,43 = 0,5

Ответ: 0,5

Answer 2

Let's break down the problem step by step:

1. (1/20 + 0.125) ÷ 2:

First, we need to add the two numbers inside the parentheses:

1/20 + 0.125 = 0.075 + 0.125 = 0.2

Then, we divide the result by 2:

0.2 ÷ 2 = 0.1

Therefore, (1/20 + 0.125) ÷ 2 = 0.1

2. 2 1/2 + 0.43:

We can convert the mixed number 2 1/2 to an improper fraction:

2 1/2 = 5/2

Then, we add the two fractions:

5/2 + 0.43 = (5/2)2/2 + 0.43100/100 = 10/4 + 43/100

Next, we need to find a common denominator:

10/4 + 43/100 = 250/100 + 43/100 = 293/100

Finally, we simplify the result if possible:

293/100 = 2.93

Therefore, 2 1/2 + 0.43 = 2.93

Putting it all together, the solution is:

(1/20 + 0.125) ÷ 2 + 2 1/2 + 0.43 = 0.1 + 2.93 = 2.99