Question

3\100*7\10 1 1\10:1 21\100

Answer 1

$\displaystyle \tt \frac{3}{100}\cdot\frac{7}{10}=\frac{21}{1000}=0,021\\\\\\1\frac{1}{10}:1\frac{21}{100}=\frac{11}{10}:\frac{121}{100}=\frac{11}{10}\cdot\frac{100}{121}==\frac{11}{10}\cdot\frac{10\cdot10}{11\cdot11}=\frac{10}{11}$

Answer 2

To evaluate the expression, you need to follow the order of operations, which is typically done using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

The expression you provided is: 3/100 * 7/10 + 1 - 1/10 : 1 + 21/100

Now let's solve it step by step:

Step 1: Perform division operations first 3/100 * 7/10 = 0.021

1 - 1/10 : 1 = 0.9

Step 2: Perform addition and subtraction operations from left to right 0.021 + 0.9 + 21/100 = 0.021 + 0.9 + 0.21 = 1.131

So, the result of the expression is 1.131.