1, interest = principal * annual interest rate * time, according to the meaning of the question, the principal is 65438+ ten thousand, the annual interest rate of 1 is 1%, and the time is 1 year, so,

Annual interest =10 *1%*1=1000 yuan.

2. If the monthly interest rate is 1, then the annual interest rate =1%*12 =12%, so the annual interest rate =10 *12% * = 650.

Extended data

First, the basic formula for calculating interest. The basic formula for calculating the interest of savings deposits is: interest = principal × deposit period × interest rate;

The second is the conversion of interest rate, in which the conversion relationship among annual interest rate, monthly interest rate and daily interest rate is: annual interest rate = monthly interest rate × 12 (month) = daily interest rate ×360 (day); Monthly interest rate = annual interest rate ÷ 12 (month) = daily interest rate ×30 (days); Daily interest rate = annual interest rate ÷360 (days) = monthly interest rate ÷30 (days). In addition, the use of interest rates should be consistent with the deposit term;

Third, the interest-bearing starting point of savings deposits is yuan, and the points below yuan do not pay interest. The interest amount is calculated to the decimal point, and the decimal point is rounded off when actually paid.

References:

Baidu Encyclopedia: Interest Calculation Formula